TY - BOOK AU - Cassel,Kevin W. TI - Variational methods with applications in science and engineering SN - 9781107022584 (hardback : alkaline paper) AV - Q172.5.V37 C27 2013 U1 - 515/.64 23 PY - 2013/// CY - Cambridge PB - Cambridge University Press KW - Variational principles KW - Science KW - Methodology KW - Engineering N1 - Includes bibliographical references (pages 403-407) and index ER -