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@article{PIM_1976_N_S_20_34_a18, author = {{\DJ}uro Kurepa}, title = {On {A} {System} {Of} {All} {Maximal} {Chains} {(Antichains)} {Of} {A} {Graph}}, journal = {Publications de l'Institut Math\'ematique}, pages = {161 }, publisher = {mathdoc}, volume = {_N_S_20}, number = {34}, year = {1976}, url = {http://geodesic.mathdoc.fr/item/PIM_1976_N_S_20_34_a18/} }
Đuro Kurepa. On A System Of All Maximal Chains (Antichains) Of A Graph. Publications de l'Institut Mathématique, _N_S_20 (1976) no. 34, p. 161 . http://geodesic.mathdoc.fr/item/PIM_1976_N_S_20_34_a18/