@article{1178242593,
author = {Spencer, Christopher B.},
title = {Relative homotopy operations},
journal = {Tohoku Math. J. (2)},
volume = {23},
number = {4},
year = {1971},
pages = { 453-456},
language = {en},
url = {http://dml.mathdoc.fr/item/1178242593}
}
Spencer, Christopher B. Relative homotopy operations. Tohoku Math. J. (2), Tome 23 (1971) no. 4, pp. 453-456. http://gdmltest.u-ga.fr/item/1178242593/