@article{10_4064_sm_18_2_187_189,
     author = {R. Sikorski},
     title = {On {Le\.za\'nski} endomorphisms},
     journal = {Studia Mathematica},
     pages = {187--189},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1959},
     doi = {10.4064/sm-18-2-187-189},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-18-2-187-189/}
}