@article{PIM_1956_S_S_X_10_a4,
     author = {France Kri\v{z}ani\v{c}},
     title = {Linear {Functionals} {On} {Banach} {Space} {And} {The} {Fundamental} {Lemma} {Of} {The} {Calculus} {Of} {Variations}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {59 },
     publisher = {mathdoc},
     volume = {_S_S_X},
     number = {10},
     year = {1956},
     url = {http://geodesic.mathdoc.fr/item/PIM_1956_S_S_X_10_a4/}
}