ШИПОВ ЛЕС (В СЕМЬЕ ЛЕСНИЧЕГО)
Article
Вестник Московского государственного университета леса - Лесной вестник.
2005.
P. 188-194
Umbrella shells are used as coverings of civil and industrial buildings. Umbrella surfaces are formed on surfaces of revolution. Several new types of umbrella surfaces are presented in the article. The coefficients of the first (A, F, B) and second (L, M, N) fundamental forms of surface are derived for presented surfaces.