@article{PMF_1907_18_1_a0,
     author = {Sierpi\'nski, Wac{\l}aw},
     title = {O sumowaniu szeregu $\sum_{n>a}^{n\ensuremath{\leq}b} \ensuremath{\tau}(n)f(n)$, gdzie \ensuremath{\tau}(n) oznacza liczb\k{e} rozk{\l}ad\'ow liczby n na sum\k{e} kwadrat\'ow dw\'och liczb ca{\l}kowitych},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {1--59},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1907},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1907_18_1_a0/}
}