13201 - Thirteen papers on functional analysis and differential equations |
13202 - Thirteen papers on functional equations and partial differential equations |
13203 - Thirteen papers on functions of real and complex variables |
13204 - Thirteen papers on group theory, algebraic geometry and algebraic topology |
13205 - Three essays on the state of economic science |
13206 - Three papers on dynamical systems. Ninth Mathematical Summer School (Kaciveli, 1971) |
13207 - Three pearls of number theory |
13208 - Three-dimensional flows |
13209 - Three-dimensional orbifolds and their geometric structures |
13210 - Threshold models in non-linear time series analysis |





