TY - JOUR AU - Jan A. RempaƂa TI - Review: John L. Troutman; Variational calculus with elementary convexity JO - Mathematica Applicanda PY - 1986 SP - 143 EP - 150 VL - 14 IS - 28 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/ma.v14i28.1681/ DO - 10.14708/ma.v14i28.1681 LA - pl ID - 10_14708_ma_v14i28_1681 ER -