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@article{PORMA_1998__55_4_48290, author = {Deshpande, M.N.}, title = {One property of triangular numbers.}, journal = {Portugaliae mathematica}, pages = {381--383}, publisher = {mathdoc}, volume = {55}, number = {4}, year = {1998}, zbl = {0926.11007}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1998__55_4_48290/} }
Deshpande, M.N. One property of triangular numbers.. Portugaliae mathematica, Tome 55 (1998) no. 4, pp. 381-383. http://geodesic.mathdoc.fr/item/PORMA_1998__55_4_48290/