Twistings, crossed coproducts, and Hopf-Galois coextensions.
Caenepeel, S. ; Wang, Dingguo ; Wang, Yanxin
International Journal of Mathematics and Mathematical Sciences, Tome 2003 (2003), p. 4325-4345 / Harvested from The Electronic Library of Mathematics
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Publié le : 2003-01-01
DOI : https://doi.org/10.1155/S0161171203212400
EUDML-ID : urn:eudml:doc:51436 
@article{02166336,
     title = {Twistings, crossed coproducts, and Hopf-Galois coextensions.},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     volume = {2003},
     year = {2003},
     pages = {4325-4345},
     doi = {10.1155/S0161171203212400},
     zbl = {1066.16036},
     language = {en},
     url = {http://dml.mathdoc.fr/item/02166336}
}

Caenepeel, S.; Wang, Dingguo; Wang, Yanxin. Twistings, crossed coproducts, and Hopf-Galois coextensions.. International Journal of Mathematics and Mathematical Sciences, Tome 2003 (2003) pp. 4325-4345. doi : 10.1155/S0161171203212400. http://gdmltest.u-ga.fr/item/02166336/