TY - BOOK AU - Romanov,V.G. TI - Integral geometry and inverse problems for hyperbolic equations with 21 figures SN - 038706429x : U1 - 517.383 PY - 1974/// CY - Berlin PB - Springer KW - Differential equations, Hyperbolic KW - Inverse problems (Differential equations) KW - Integral geometry N1 - Includes index; Bibliography: p. 148-151 ER -