the alphabetic style of biblatex is already very close to my requirements, but considering the following entry
@BOOK{smith1,
author = {John Smith and Mike Someone},
title = {The book with a very very very very very long title},
year = {2005},
publisher = {Publisher},
location = {New York}
}
I would like to have a label like [Smith, 2005] instead of [Smi+05]. In other words:
[<first author's last name>, <year with 4 digits>]
In case there is more than one entry with the same author and the same year, a single letter should be added right behind the year like in [Smith, 2005a] (alphabetic already does this by default).