@article{10_4064_ap_18_2_121_126,
     author = {J. Bochenek},
     title = {On a modification of a theorem of {O.} {Olejnik} and on its applications},
     journal = {Annales Polonici Mathematici},
     pages = {121--126},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1966},
     doi = {10.4064/ap-18-2-121-126},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-18-2-121-126/}
}