@article{10_4064_ap_33_2_199_207,
     author = {M. A. Wolanowski},
     title = {Relations between extrema of parametrical integrals and ordinary integrals},
     journal = {Annales Polonici Mathematici},
     pages = {199--207},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1976},
     doi = {10.4064/ap-33-2-199-207},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-33-2-199-207/}
}