TY - BOOK AU - Popov, Viktor Nikolaevich, TI - Functional integrals and collective excitations T2 - Cambridge monographs on mathematical physics SN - 0521307775 AV - QC20.7F85 P67 PY - 0000///[cambridgeshire] PY - 1987/// CY - Cambridge PB - Cambridge University Press KW - IntegraciĆ³n funcional KW - Excitaciones colectivas (Fisica) ER -