TY - JOUR AU - V. I. Vozyakov TI - Functional approach to the theory of twodimensional quantum Fermi systems in an external periodic field JO - Zapiski Nauchnykh Seminarov POMI PY - 1988 SP - 29 EP - 43 VL - 169 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1988_169_a3/ LA - ru ID - ZNSL_1988_169_a3 ER -