Leningrad. Universitet, Leningradskiĭ gosudarstvennyĭ universitet imeni A.A. Zhdanova, Institut istorii (Akademii͡a nauk SSSR). Leningradskoe otdelenie, Institut istorii SSSR (Akademii︠a︡ nauk SSSR). Leningradskoe otdelenie, A. L. Shapiro