Prof Kulakov wrote an unusual textbook (please, look at pp. 44-57) for his students and devoted it to his supervisor Igor Tamm. This book isn't translated yet, but it's possible to use Yandex translation program.
https://ru.wikipedia.org/wiki/%D0%9A%D1%83%D0%BB%D0%B0%D0%BA%D0%BE%D0%B2,_%D0%AE%D1%80%D0%B8%D0%B9_%D0%98%D0%B2%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%87