@article{bwmeta1.element.bwnjournal-article-fmv64i1p5bwm,
author = {Hanna Patkowska},
title = {A homotopy extension theorem for fundamental sequences},
journal = {Fundamenta Mathematicae},
volume = {64},
year = {1969},
pages = {87-89},
zbl = {0175.49703},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv64i1p5bwm}
}
Patkowska, Hanna. A homotopy extension theorem for fundamental sequences. Fundamenta Mathematicae, Tome 64 (1969) pp. 87-89. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv64i1p5bwm/