J. M. Reddy.American Society of Mechanical Engineers(1982 : Phoenix, Ariz)：Penalty-finite element methods in mechanics; pressed at the Winter Annual Meeting of the ASME, Phoenix, Ariz, Nov. 1982..asme,1982.
American Society of Mechanical Engineers(1982 : Phoenix, Ariz)：Penalty-finite element methods in mechanics; pressed at the Winter Annual Meeting of the ASME, Phoenix, Ariz, Nov. 1982.
