Omit similar entries in the bibliography

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1

I have the following Problem:

I have to cite the same book often with different authors and it only is allowed to show up once in the bibliography (the author is not shown).

It has always the same ‘publisher’, that is shown in the bibliography.

Example:

Footnote_Cit_1: AuthorX in Publisher, Title

Footnote_Cit_2: AuthorY in Publisher, Title

Bib: Publisher, Title, …

I have an extra reference safed for each author, since it is mandatory for me to have the author as field and not as prefix.

What I tried:

  1.  Writing the publisher as ‘first-author-field’ and the author as some other field. This way the book is only listed once in the bibliography. Problem: It doesn’t matter which reference I cite, it always picks the alphabetically first author (displays AuthorX, even though it says AuthorY in the cited reference).
  2. Leaving the ‘first-author-field’ empty and putting the content somewhere else. Same result as 1.
  3. Putting the author in ‘first-author-field’ and the publisher somewhere else. This way the footnote citations work, but I get the book two times in my bibliography (even though it both times says “Publisher, Title, …”), having the same entry multiple times.

Is there any way to fix this?

2

Couldn’t find an edit-button:

I use Endnote x7 (Desktop) on Mac

4

I study law. The books I am talking about are basically “commenaries” on the laws themselves. Every author only comments on a certain number of laws, so each of this books has at least 5 or 6 authors. Then there is the editor that puts the work of all the authors working on the book together and publishes it.

In the bibliography I have to list the book like this:

editor, title, edition, place published, year.

In the footnotes, it is supposed to look like this:

author, editor, title, cited pages.

And by author I mean the author that wrote the specific comment I am citing.

I could provide the required web resource, but it’d be german and therefore only of little help…