Bogolyubov, N. N.; Tolmachev, V. V.; Shirkov, D. V. (November 1958). "A new method in the theory of superconductivity". Fortschritte der Physik. 6 (11–12): 605–682. Bibcode:1958ForPh...6..605B. doi:10.1002/prop.19580061102.
Bogolyubov, N. N.; Tolmachev, V. V.; Shirkov, D. V. (November 1958). "A new method in the theory of superconductivity". Fortschritte der Physik. 6 (11–12): 605–682. Bibcode:1958ForPh...6..605B. doi:10.1002/prop.19580061102.