σ-extensions of discrete multivalued groups.
Yagodovsky, P.V.
Zapiski Nauchnykh Seminarov POMI, Tome 321 (2005), p. 225-242 / Harvested from The Electronic Library of Mathematics
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Publié le : 2005-01-01
EUDML-ID : urn:eudml:doc:233246 
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     title = {<title-group xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><article-title xml:lang="en"><math><mi>$\sigma$</mi></math>-extensions of discrete multivalued groups.</article-title></title-group>},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     volume = {321},
     year = {2005},
     pages = {225-242},
     zbl = {1083.20062},
     language = {en},
     url = {http://dml.mathdoc.fr/item/02214062}
}

Yagodovsky, P.V. σ-extensions of discrete multivalued groups.. Zapiski Nauchnykh Seminarov POMI, Tome 321 (2005) pp. 225-242. http://gdmltest.u-ga.fr/item/02214062/