Celebratio Mathematica

V. A. Fateev, I. V. Fro­lov, and A. S. Shvarts: “Kvantovye fluk­tu­at­sii in­stan­tonov v dvumernykh neline­jnykh teor­iyakh” [Quantum fluc­tu­ations of in­stan­tons in two-di­men­sion­al non­lin­ear the­or­ies], Yadernaya Fiz. 30 : 4 (1979), pp. 1134–​1147. An Eng­lish trans­la­tion was pub­lished in Sov. J. Nucl. Phys. 30:4 (1979). MR 576531 article

V. A. Fateev, I. V. Fro­lov, and A. S. Schwarz: “Quantum fluc­tu­ations of in­stan­tons in a two-di­men­sion­al non­lin­ear an­iso­trop­ic sigma-mod­el,” Yadernaya Fiz. 32 : 1 (1980), pp. 299–​300. An Eng­lish trans­la­tion was pub­lished in Sov. J. Nucl. Phys. 32:1 (1980). MR 618462 article

V. A. Fateev, I. V. Fro­lov, A. S. Schwarz, and Yu. S. Ty­up­kin: “Quantum fluc­tu­ations of in­stan­tons,” Sov. Sci. Rev., Sect. C 2 (1981), pp. 1–​51. MR 659266 Zbl 0535.​58026 article