@article{1200692331,
author = {Nomura, Yasutoshi},
title = {A non-stable secondary operation and homotopy classification of maps.},
journal = {Osaka J. Math.},
volume = {6},
number = {1},
year = {1969},
pages = { 117-134},
language = {en},
url = {http://dml.mathdoc.fr/item/1200692331}
}
Nomura, Yasutoshi. A non-stable secondary operation and homotopy classification of maps.. Osaka J. Math., Tome 6 (1969) no. 1, pp. 117-134. http://gdmltest.u-ga.fr/item/1200692331/