I.I.Batyrshin. Isolated 2-computably enumerable $q$-degrees
I.A.Bikchantaev. The Riemann boundary-value problem on an $n$-sheeted surface free of limit points of projections of branch points onto $\mathbb C$
L.V.Maslovskaya and O.M.Maslovskaya. The Nitsche mortar method for matching grids in a mixed finite element method
R.V.Namm and A.S.Tkachenko. Solution of a semicoercive signorini problem by a method of iterative proximal regularization of a modified Lagrange functional
E.Yu.Romanova. Asymptotic analogs of the Floquet–Lyapunov theorem for some classes of periodic systems of ordinary differential equations
K.B.Sabitov and E.M.Safin. The inverse problem for a mixed-type parabolic-hyperbolic equation in a rectangular domain
E.V.Stefanyuk and V.A.Kudinov. Approximate analytic solution of heat conduction problems with a mismatch between initial and boundary conditions
Z.B.Tsalyuk and M.B.Tsalyuk. The resolvent structure of a Volterra equation with nonsummable difference kernel
M.M.Yamaleev. Strong noncuppability in low computably enumerable degrees