@article{GDZPPN002290448,
title = {Homotopie-Operationen relativer Homotopiegruppen. II.},
journal = {Mathematische Annalen},
volume = {146},
year = {1962},
pages = {51-68},
language = {de},
url = {http://dml.mathdoc.fr/item/GDZPPN002290448}
}
IBISCH, H.D. Homotopie-Operationen relativer Homotopiegruppen. II.. Mathematische Annalen, Tome 146 (1962) pp. 51-68. http://gdmltest.u-ga.fr/item/GDZPPN002290448/