中国科学院数学与系统科学研究院期刊网
AMS
Some Results on Unstable Polynomial Aigebras over the Steenrod Algebra*
Shen Xinyao, Ying Kefeng
Acta Mathematica Sinica . 1991, (3): 241 -246 .  DOI: 10.1007/BF02583000