TY - BOOK AU - Giaquinta M ed. ED - Centro Internazional Matematico Estivo( 2nd session : 1987 : Montecatini ) ED - TI - Topics in calculus of variations: lectures U1 - 515.64 PY - 1989/// CY - Berlin PB - Springer Verlag KW - Calculus KW - Variations ER -