Virtual Herbarium ALTB: collection of vascular plants of the Altai Mountain Country oleh Aleksey V. Vaganov, Alexander I. Shmakov, Sergey V. Smirnov, Nadezda A. Usik, Alena A. Shibanova, Aleksey A. Kechaykin, Petr A. Kosachev, Tatyana M. Kopytina, Elizaveta A. Zholnerova, Kristina E. Medvedeva, Vladimir F. Zaikov, Tatyana A. Sinitsyna, Alexander P. Shalimov, Evgenij V. Antonyuk, Polina D. Gudkova, Denis A. Dmitriev, Alexander A. Batkin, Dmitry E. Kasatkin, Denis L. Belkin