MO Method of variation of parameters for dynamic systems by Deo, Sadashiv G., Lakshmikantham, Vangipuram fromSeries in mathematical analysis and applications 0 Type: Book
IA Integral and integrodifferential equations: theory, methods and applications by Agarwal, Ravi P, O'Regan, Donal fromSeries in mathematical analysis and applications 0 Type: Book
