@article{105274, author = {Vladim\'\i r Sou\v cek}, title = {The minimum existence of functional $\int\_a^b F( x(t), y(t), \dot{x}(t), \dot{y}(t) ) dt$}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {011}, year = {1970}, pages = {205-225}, zbl = {0197.41702}, mrnumber = {0270246}, language = {en}, url = {http://dml.mathdoc.fr/item/105274} }
Souček, Vladimír. The minimum existence of functional $\int_a^b F( x(t), y(t), \dot{x}(t), \dot{y}(t) ) dt$. Commentationes Mathematicae Universitatis Carolinae, Tome 011 (1970) pp. 205-225. http://gdmltest.u-ga.fr/item/105274/
Integrální počet II., Praha 1955. (1955)
Lekcii po variacionnomu izčisleniju, Moskva 1955. (1955)