The following code generates an error about "! LuaTeX error ...onTeXt/tex/texmf-local/tex/context/base/bibl-tra.lua:192: attempt to compare number with string" \startpublication[k=1,t=article,a={{Test},{}},y=2012] \artauthor[]{Test}[T.]{}{Test} \pubyear{2012} \arttitle{Test} \journal{Test} \pages{1} \stoppublication \starttext abc\cite[1] \placepublications[criterium=text] \stoptext I also tried the bibtex alternative, and it got the same error as well. $ context --version mtx-context | main context file: d:/ConTeXt/tex/texmf-local/tex/context/base/context.mkiv mtx-context | current version: 2011.04.11 18:55 -- Best Regards Chen