@article{GDZPPN002351005, title = {Pontryagin's Maximum Principle and a Minimax Problem.}, journal = {Mathematica Scandinavica}, volume = {28}, year = {1971}, pages = {55-71}, zbl = {0236.49014}, url = {http://dml.mathdoc.fr/item/GDZPPN002351005} }
Aronsson, Gunnar. Pontryagin's Maximum Principle and a Minimax Problem.. Mathematica Scandinavica, Tome 28 (1971) pp. 55-71. http://gdmltest.u-ga.fr/item/GDZPPN002351005/