TY - DATA AU - Costa,David G. ED - SpringerLink (Online service) TI - An Invitation to Variational Methods in Differential Equations SN - 9780817645366 AV - QA371 C67 2007 PY - 2007/// CY - Boston, MA PB - Birkhäuser Boston KW - Mathematics KW - Differential Equations KW - Differential equations, partial KW - Ordinary Differential Equations KW - Calculus of Variations and Optimal Control, Optimization KW - Partial Differential Equations UR - http://dx.doi.org/10.1007/978-0-8176-4536-6 ER -