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@article{PIM_1969_N_S_09_23_a30, author = {{\DJ}. Kurepa}, title = {Some {Generatings} {And} {Properties} {Of} {Ordered} {Sets}}, journal = {Publications de l'Institut Math\'ematique}, pages = {217 }, publisher = {mathdoc}, volume = {_N_S_09}, number = {23}, year = {1969}, url = {http://geodesic.mathdoc.fr/item/PIM_1969_N_S_09_23_a30/} }
Đ. Kurepa. Some Generatings And Properties Of Ordered Sets. Publications de l'Institut Mathématique, _N_S_09 (1969) no. 23, p. 217 . http://geodesic.mathdoc.fr/item/PIM_1969_N_S_09_23_a30/