Online Resource
Borosh, I.
;
Hensley, D.
;
Abbott, W. L.
;
[et al.]
Bloom, D. M.
;
Breusch, Robert
;
Cater, F. S.
;
Christopher, John
;
Covill, Randall J.
;
Eisner, Milton
;
Fickett, James
;
Filesta, Michael
;
Foster, Lorraine L.
;
Franceschine, Nick
;
Jager, Thomas
;
Kuipers, L.
;
Kwong, M. K.
;
... and further 9
JSTOR
;
1980
In:
The American Mathematical Monthly Vol. 87, No. 5 ( 1980-05-01), p. 406-