Morse, P. M., & Feshbach, H. (1981). Methods of theoretical physics, part 1: Chapters 1 to 8. McGraw-Hill ; Feshbach Publishing.

Morse, Philip M., and Herman Feshbach. Methods of Theoretical Physics, Part 1: Chapters 1 to 8. New York ; Minneapolis: McGraw-Hill ; Feshbach Publishing, 1981.

Morse, Philip M., and Herman Feshbach. Methods of Theoretical Physics, Part 1: Chapters 1 to 8. McGraw-Hill ; Feshbach Publishing, 1981.