摘要:
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sci-hub.se 参考文章(2)
John Ryff, On the representation of doubly stochastic operators. Pacific Journal of Mathematics. ,vol. 13, pp. 1379- 1386 ,(1963) , 10.2140/PJM.1963.13.1379
John Ryff, On Muirhead’s theorem Pacific Journal of Mathematics. ,vol. 21, pp. 567- 576 ,(1967) , 10.2140/PJM.1967.21.567