Salve Taco, I'm using m-bib, with \setupbibtex[database=literatur,sort=author] \setuppublications[sort=bbl,refcommand=authoryear,numbering=yes] This leads to three problems: First, I do have entries such as @Misc{Wikipedia, key = {Wikipedia}, title = {Wikipedia, the free online encyclopedia}, howpublished = {\gotoURL{http://wikipedia.com}} } with no year entry, and this comes out as "Wikipedia ()". I think the parens should only be used if the year is nonempty. Second, I getempty entries in my list of references, which do get a number. Also, the first 20 numbers are printed in red, while the subsequent entries are in black. I know this is a vague description, I haven't been able to analyze it in more detail yet. Just wanted to let you know. Third, I have entries in my bibliography where the authors are listed with their family names only. This causes spurious commas in the list of references. I'll probably add initials and/or chrisitan names where I know them, but I think m-bib should support these entries. @inproceedings{corless97sequence, author = "Corless and Jeffrey and Knuth", title = {{A Sequence of Series for the Lambert {W} Function}}, booktitle = "{ISSAC}: Proceedings of the {ACM} {SIGSAM} International Symposium on Symbolic and Algebraic Computation (formerly {SYMSAM}, {SYMSAC}, {EUROSAM}, {EUROCAL}) (also sometimes in cooperation with the Symbolic and Algebraic Manipulation Groupe in Europe ({SAME}))", year = "1997", url = "citeseer.ist.psu.edu/corless97sequence.html" } As an aside: Does m-bib provide a way of including page numbers etc. in the citation? (For authoryear style, this would be overkill, but for other styles, I think "[233, p. 40]" to be pretty readable and helpful.) regards and keep up the good work, Christopher