中国科学院数学与系统科学研究院期刊网
AMS
Prinjective Ringel–Hall Algebras for Posets of Finite Prinjective Type
Justyna KOSAKOWSKA
Acta Mathematica Sinica . 2009, (7): 1183 -1190 .  DOI: 10.1007/s10114-009-6541-0