/*
 * Copyright (c) 2009-2013 Frank G. Bennett, Jr. All Rights
 * Reserved.
 *
 * The contents of this file are subject to the Common Public
 * Attribution License Version 1.0 (the “License”); you may not use
 * this file except in compliance with the License. You may obtain a
 * copy of the License at:
 *
 * http://bitbucket.org/fbennett/citeproc-js/src/tip/LICENSE.
 *
 * The License is based on the Mozilla Public License Version 1.1 but
 * Sections 1.13, 14 and 15 have been added to cover use of software over a
 * computer network and provide for limited attribution for the
 * Original Developer. In addition, Exhibit A has been modified to be
 * consistent with Exhibit B.
 *
 * Software distributed under the License is distributed on an “AS IS”
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is the citation formatting software known as
 * "citeproc-js" (an implementation of the Citation Style Language
 * [CSL]), including the original test fixtures and software located
 * under the ./tests subdirectory of the distribution archive.
 *
 * The Original Developer is not the Initial Developer and is
 * __________. If left blank, the Original Developer is the Initial
 * Developer.
 *
 * The Initial Developer of the Original Code is Frank G. Bennett,
 * Jr. All portions of the code written by Frank G. Bennett, Jr. are
 * Copyright (c) 2009-2013 Frank G. Bennett, Jr. All Rights Reserved.
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU Affero General Public License (the [AGPLv3]
 * License), in which case the provisions of [AGPLv3] License are
 * applicable instead of those above. If you wish to allow use of your
 * version of this file only under the terms of the [AGPLv3] License
 * and not to allow others to use your version of this file under the
 * CPAL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the
 * [AGPLv3] License. If you do not delete the provisions above, a
 * recipient may use your version of this file under either the CPAL
 * or the [AGPLv3] License.”
 */

This test illustrates a use case for the following rule, discussed on the Zotero forums:

  "When different groups of authors with the same first author and date 
  occur, they should be cited thus: (Able, Baker & Charles 1986a; Able, 
  David & Edwards 1986b), then subsequently abbreviated to (Able et al. 
  1986a; Able et al. 1986b)."

  "Italicized letters 'a', 'b', 'c', etc., should be added to the date of 
  papers with the same first authorship and year"

The test illustrates that the first rule can be satisfied with the CSL 0.8
feature set, and the second using the year-suffix text variable introduced
in CSL 0.9.  It differs slightly from the example given by the poster
(asplundj) in that the cites do not include author initials, but this conforms
to the cited style guide.


The discussion can be found at: 
  http://forums.zotero.org/discussion/5290/collapse-year-suffix/

The style guide containing the rule quoted above can be found 
at:
  http://www.wiley.com/bw/submit.asp?ref=0269-8463&site=1


The point in all of this for implementers is that evaluation of 
an in-text key for disambiguation purposes should be based on the 
subsequent form of the cite, even if it occurs only once in the 
text.


Frank Bennett
2009-04-14



>>===== MODE =====>>
citation
<<===== MODE =====<<



>>===== RESULT =====>>
(Baur, Fröberg, Baur, et al. 2000<i>a</i>; Baur, Schileyko &#38; Baur 2000<i>b</i>; Doe 2000)
<<===== RESULT =====<<


>>===== CSL =====>>
<style 
      xmlns="http://purl.org/net/xbiblio/csl"
      class="note"
      version="1.0">
  <info>
    <id />
    <title />
    <updated>2009-08-10T04:49:00+09:00</updated>
  </info>
  <citation 
         disambiguate-add-year-suffix="true"
         et-al-min="3"
         et-al-subsequent-min="1"
         et-al-subsequent-use-first="1"
         et-al-use-first="3">
    <layout delimiter="; " prefix="(" suffix=")">
      <names variable="author">
        <name and="symbol" delimiter=", " delimiter-precedes-last="never" form="short" />
      </names>
      <date prefix=" " variable="issued">
        <date-part name="year" />
      </date>
      <text font-style="italic" variable="year-suffix" />
    </layout>
  </citation>
</style>
<<===== CSL =====<<


>>===== INPUT =====>>
[
    {
        "author": [
            {
                "family": "Baur", 
                "given": "Bruno", 
                "static-ordering": false
            }, 
            {
                "family": "Fröberg", 
                "given": "Lars", 
                "static-ordering": false
            }, 
            {
                "family": "Baur", 
                "given": "Anette", 
                "static-ordering": false
            }, 
            {
                "family": "Guggenheim", 
                "given": "Richard", 
                "static-ordering": false
            }, 
            {
                "family": "Haase", 
                "given": "Martin", 
                "static-ordering": false
            }
        ], 
        "container-title": "Nordic Journal of Botany", 
        "id": "ITEM-1", 
        "issued": {
            "date-parts": [
                [
                    "2000"
                ]
            ]
        }, 
        "page": "119-128", 
        "title": "Ultrastructure of snail grazing damage to calcicolous lichens", 
        "type": "article-journal", 
        "volume": "20"
    }, 
    {
        "author": [
            {
                "family": "Baur", 
                "given": "Bruno", 
                "static-ordering": false
            }, 
            {
                "family": "Schileyko", 
                "given": "Anatoly A.", 
                "static-ordering": false
            }, 
            {
                "family": "Baur", 
                "given": "Anette", 
                "static-ordering": false
            }
        ], 
        "container-title": "Journal of Molluscan Studies", 
        "id": "ITEM-2", 
        "issued": {
            "date-parts": [
                [
                    "2000"
                ]
            ]
        }, 
        "page": "285-289", 
        "title": "Ecological observations on _Arianta aethiops aethiops_ (Helicidae), a land snail endemic to the South Carpathian mountains, Romania", 
        "type": "article-journal", 
        "volume": "66"
    }, 
    {
        "author": [
            {
                "family": "Doe", 
                "given": "John", 
                "static-ordering": false
            }
        ], 
        "container-title": "Journal of Irreproducible Results", 
        "id": "ITEM-3", 
        "issued": {
            "date-parts": [
                [
                    "2000"
                ]
            ]
        }, 
        "page": "5-7", 
        "title": "Some bogus title", 
        "type": "article-journal", 
        "volume": "666"
    }
]
<<===== INPUT =====<<
