@article{PMF_1929-1930_37_1_a0,
     author = {Natanson, W{\l}adys{\l}aw},
     title = {Pierwsze {Zasady} {Mechaniki} {Undulacyjnej}},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {1--76},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1929-1930},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1929-1930_37_1_a0/}
}