Mathematics and its applications


1	v. 13 An introduction to orthogonal polynomials / T.S. Chihara New York : Gordon and Breach , c1978
2	v. 14 Systems of partial differential equations and Lie pseudogroups / J.F. Pommaret ; with a preface by André Lichnerowicz New York : Gordon and Breach Science Publishers , c1978
3	v. 6 Linear partial differential equations with constant coefficients : existence, approximation, and regularity of solutions / François Trèves New York : Gordon and Breach , c1966