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[A]A.A. Abrikosov, Introduction to the Theory of Metals, Moscow, Nauka (1987).

[N1]S.P. Novikov, The Hamiltonian formalism and a multivalued analog of Morse theory, Uspekhi Math. Nauk (Russian Math Surveys) 37:5 (227) (1982), 3–49.

[N2]S.P. Novikov, Critical points and level surfaces of multivalued functions. Proceedings of the Steklov Institute of Mathematics, 1986, AMS, iss 1, 223–232.

[N3]S.P. Novikov, Quasiperiodic structures in topology. In the proceedings of the Conference “Topological methods in Modern Mathematics”, Stonybrook University, June 1991 (dedicated to the 60th birthday of John Milnor). Stonybrook, 1993.

[N4]S.P. Novikov, Quantization of the finite gap potentials and string equation, Functional Analysis and its Applications 24:4 (1990), 196–206.

[N5]S.P. Novikov, Two dimensional Schroedinger Operator in the periodic fields. Current Problems in Mathematics, VINITI, 1983, v 23, 3–22. (Translated by AMS in the January 1985).

[N6]S.P. Novikov, Bloch functions in a magnetic field and vector bundles. Typical dispersion relations and their quantum numbers, Doklady AN SSSR (Russian Math Dokl) 257:3 (1981), 538–543.

[Z]A.V. Zorich, Novikov's problem on the semiclassical motion of electron in the homogeneous magnetic field. Uspekhi Math Nauk (RMS) 39:5 (1984), 235–236.