@article{1206139557,
author = {Nishig\^ori, Noboru},
title = {On loop extensions of groups and $M$-cohomology groups},
journal = {J. Sci. Hiroshima Univ. Ser. A-I Math.},
volume = {27},
number = {2},
year = {1963},
pages = { 151-165},
language = {en},
url = {http://dml.mathdoc.fr/item/1206139557}
}
Nishigôri, Noboru. On loop extensions of groups and $M$-cohomology groups. J. Sci. Hiroshima Univ. Ser. A-I Math., Tome 27 (1963) no. 2, pp. 151-165. http://gdmltest.u-ga.fr/item/1206139557/