@inbook{403767, title = {1. kapitola. Mno\v ziny a Vennovy diagramy}, booktitle = {Booleova algebra}, series = {GDML\_Books}, publisher = {Mlad\'a fronta}, address = {Praha}, year = {1973}, pages = {5-14}, url = {http://dml.mathdoc.fr/item/403767} }
(éd.). 1. kapitola. Množiny a Vennovy diagramy, dans Booleova algebra, GDML_Books, (1973), pp. 5-14. http://gdmltest.u-ga.fr/item/403767/