@article{1206139310,
author = {Nishig\^ori, Noboru},
title = {On loop extensions of groups and $M$-cohomology groups. II},
journal = {J. Sci. Hiroshima Univ. Ser. A-I Math.},
volume = {29},
number = {2},
year = {1965},
pages = { 17-26},
language = {en},
url = {http://dml.mathdoc.fr/item/1206139310}
}
Nishigôri, Noboru. On loop extensions of groups and $M$-cohomology groups. II. J. Sci. Hiroshima Univ. Ser. A-I Math., Tome 29 (1965) no. 2, pp. 17-26. http://gdmltest.u-ga.fr/item/1206139310/