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@article{PIM_1975_N_S_18_32_a12, author = {{\DJ}uro Kurepa}, title = {Fixpoints {Of} {Decreasing} {Mappings} {Of} {Ordered} {Sets}}, journal = {Publications de l'Institut Math\'ematique}, pages = {111 }, publisher = {mathdoc}, volume = {_N_S_18}, number = {32}, year = {1975}, url = {http://geodesic.mathdoc.fr/item/PIM_1975_N_S_18_32_a12/} }
Đuro Kurepa. Fixpoints Of Decreasing Mappings Of Ordered Sets. Publications de l'Institut Mathématique, _N_S_18 (1975) no. 32, p. 111 . http://geodesic.mathdoc.fr/item/PIM_1975_N_S_18_32_a12/