%0 Journal Article %A Andrzej Grzybowski %A Zdzisław Porosiński %A Krzysztof J. Szajowski %T Trybula's papers related to optimal control %J Mathematica Applicanda %D 2010 %P 97-116 %V 38 %N 1 %U http://geodesic.mathdoc.fr/articles/10.14708/ma.v38i1.254/ %R 10.14708/ma.v38i1.254 %G pl %F 10_14708_ma_v38i1_254