The finite element method in partial differential equations / A.R. Mitchell and R. Wait. Mitchell, A. R. (Andrew R.) Wait, R., joint author. Differential equations, Partial Numerical solutions. Finite element method. QA377 .M572 517.38 MIF "A Wiley-Interscience publication." Includes index. Bibliography: p. [191]-195. London ; New York : Wiley, c1977. c1977. 1977 Text x, 198 p. : eng