@article{PMF_1890_2_1_a2,
     author = {Rudzki, M. P.},
     title = {O rytmicznych oscylacyach morza},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {33--56},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {1890},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1890_2_1_a2/}
}