@article{10_4064_am_8_2_169_177,
     author = {W. Sobieszek},
     title = {O pewnej klasie warunkowych zagadnie\'n ekstremalnych},
     journal = {Applicationes Mathematicae},
     pages = {169--177},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1965},
     doi = {10.4064/am-8-2-169-177},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-8-2-169-177/}
}