BPTJ 2004, volume LX, pages 133-144. This is old stuff (see my PhD dissertation), but the issue of the case value of numeral subjects is still controversial, so I tried to collect arguments for the accusative hypothesis and refute arguments for the other hypotheses in a concise and relatively pre-theoretical way.
Electronically available formats:
BibTeX entry:
@string{bptj = "Biuletyn {P}olskiego {T}owarzystwa {J}ęzykoznawczego"} @Article{prze:03b, author = "Adam Przepiórkowski", title = "O~wartości przypadka podmiotów liczebnikowych", journal = bptj, pages = "133--143", volume = "LX", year = 2004}