Renormalization: an introduction . by Salmhofer, Manfred fromTexts and Monographs in Physics 0 Type: Book
Adjoint equations and perturbation algorithms in nonlinear problems by Martchouk, Gouri Ivanovitch, Agoshkov, Valeri I., (Valeriĭ Ivanovich), Shutyaev, Victor 0 Type: Book
Singular perturbation methods for ordinary differential equations by O'Malley, Robert E. fromApplied mathematical sciences (Springer-Verlag New York Inc… 0 Type: Book