12. Basic notions relative to groupoids
Foundations of the Theory of Groupoids and Groups, GDML_Books, (1974), p. 94-100 / Harvested from
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@inbook{401551,
     title = {12. Basic notions relative to groupoids},
     booktitle = {Foundations of the Theory of Groupoids and Groups},
     series = {GDML\_Books},
     publisher = {VEB Deutscher Verlag der Wissenschaften},
     address = {Berlin},
     year = {1974},
     pages = {94-100},
     url = {http://dml.mathdoc.fr/item/401551}
}

 (éd.). 12. Basic notions relative to groupoids, dans Foundations of the Theory of Groupoids and Groups, GDML_Books,  (1974), pp. 94-100. http://gdmltest.u-ga.fr/item/401551/