Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{10_21136_CPM_1958_108631, author = {\v{C}ul{\'\i}k, Karel}, title = {Pozn\'amky k teorii operac{\'\i}}, journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky}, pages = {473--474}, publisher = {mathdoc}, volume = {083}, number = {4}, year = {1958}, doi = {10.21136/CPM.1958.108631}, language = {cs}, url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1958.108631/} }
Čulík, Karel. Poznámky k teorii operací. Časopis pro pěstování matematiky, Tome 083 (1958) no. 4, pp. 473-474. doi : 10.21136/CPM.1958.108631. http://geodesic.mathdoc.fr/articles/10.21136/CPM.1958.108631/
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