Б. М. Левитан, “Почти периодичность бесконечно-зонных потенциалов”, Изв. АН СССР. Сер. матем., 45:2 (1981), 291–320 ; B. M. Levitan, “Almost periodicity of infinite-zone potentials”, Math. USSR-Izv., 18:2 (1982), 249–273
В. К. Мельников, “Законы сохранения для одного класса систем нелинейных эволюционных уравнений”, Функц. анализ и его прил., 15:1 (1981), 43–60 ; V. K. Mel'nikov, “Conservation laws for a class of systems of nonlinear evolution equations”, Funct. Anal. Appl., 15:1 (1981), 33–47
M. A. Olshanetsky, A. M. Perelomov, “Classical integrable finite-dimensional systems related to Lie algebras”, Phys. Rep., 71:5 (1981), 313–400
M. Jimbo, T. Miwa, “Monodromy perserving deformation of linear ordinary differential equations with rational coefficients. II”, Phys. D, 2:3 (1981), 407–448
I. V. Cherednik, “Jacobians in classical field theory”, Phys. D, 3:1-2 (1981), 306–310
J. E. Avron, B. Simon, “Transient and recurrent spectrum”, J. Funct. Anal., 43:1 (1981), 1–31
Yan‐Chow Ma, Mark J. Ablowitz, “The Periodic Cubic Schrõdinger Equation”, Stud Appl Math, 65:2 (1981), 113
North-Holland Mathematics Studies, 50, The Inverse Scattering Transformation and The Theory of Solitons - An Introduction, 1981, 217
B. Hafizi, “Nonlinear evolution equations, recurrence and stochasticity”, The Physics of Fluids, 24:10 (1981), 1791
Boiti M., Pempinelli F., “Similarity solutions and Bäcklund transformations of the Boussinesq equation”, Nuovo Cimento B (11), 56:1 (1980), 148–156