TY - BOOK AU - Miller, Willard TI - Symmetry and separation of variables: _ T2 - Encuclopedia of mathematics and its applications 4 SN - 9780521177399 U1 - 530.155353 PY - 2012/// CY - Cambridge PB - Cambridge University Press KW - KW - Symmetry (physics) KW - functions special KW - differential eduations ER -