From the reviews of the second edition:

„This volume is a translation of the current (third) German edition of ‘Quantenmechanik für Fortgeschrittene (QM II)’. … It interfaces nicely with the ‘Quantum Mechanics’ book by the same author … which proved equally popular. … it may be used for self study or as a textbook for a follow--up course by any student with a good grounding in the usual quantum mechanics of a physics curriculum. … The translation is up to standard … . There is an adequate supply of exercises.“ (Walter Troost, Physicalia, Vol. 57 (3), 2005)

„It is the second edition in English, and is a translation of the third German edition. … this book may actually be the more accessible to an isolated learner, because the various aspects are developed in an unhurried fashion; the author remarks that ‘the inclusion of all mathematical steps and full presentation of intermediate calculations ensures ease of understanding’. … Schwabl’s book would be excellent for those requiring a detailed presentation of the topics … . It includes a substantial number of interesting problems.“ (A. Whitaker, Journal of Physics A: Mathematical and General, Issue 37, February, 2004)