@article{1029002057,
author = {Saeki, Sadahiro and Sato, Enji},
title = {Critical points and point derivations on $M(G)$.},
journal = {Michigan Math. J.},
volume = {25},
number = {1},
year = {1978},
pages = { 147-161},
language = {en},
url = {http://dml.mathdoc.fr/item/1029002057}
}
Saeki, Sadahiro; Sato, Enji. Critical points and point derivations on $M(G)$.. Michigan Math. J., Tome 25 (1978) no. 1, pp. 147-161. http://gdmltest.u-ga.fr/item/1029002057/