@article{10_4064_cm_30_2_289_293,
     author = {Robert Bartoszy\'nski},
     title = {On certain combinatorial identities},
     journal = {Colloquium Mathematicum},
     pages = {289--293},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1974},
     doi = {10.4064/cm-30-2-289-293},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-30-2-289-293/}
}