TY JOUR TI From teaching experience. X. Regular, semi-regular and irregular plane partitions KW regular KW semi-regular and irregular plane partitions KW partitions into equal polygons KW Diophantus equation KW enumeration algorithm KW lattice systems in the plane JO Vestnik of geosciences AU Voytehovskiy, Y.L. PY 2022 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"