A Pullback theorem for cofibrations.
Kieboom, R.W.
Manuscripta mathematica, Tome 58 (1987), p. 381-384 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1987-01-01
EUDML-ID : urn:eudml:doc:155228 
@article{GDZPPN002228033,
     title = {A Pullback theorem for cofibrations.},
     journal = {Manuscripta mathematica},
     volume = {58},
     year = {1987},
     pages = {381-384},
     zbl = {0617.55002},
     url = {http://dml.mathdoc.fr/item/GDZPPN002228033}
}

Kieboom, R.W. A Pullback theorem for cofibrations.. Manuscripta mathematica, Tome 58 (1987) pp. 381-384. http://gdmltest.u-ga.fr/item/GDZPPN002228033/