R. Alexander

发表

T. L. Heying, J. Reiner, R. Alexander, 1964 .

C. Morley, G. Stephenson, P. Howard, 1988, Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences.

M. Rubin, R. Alexander, Gordon Lindenblad, 1960, Annals of the New York Academy of Sciences.