Algebrotopological approach to the reality problem. Real action variables in the theory of finite-zone solutions of the sine-Gordon equation
Translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 133, 177-196 (Russian) (1984; Zbl 0546.35071).
scientific article; zbMATH DE number 3931608
scientific article