https://www.thevespiary.org/rhodium/Rhodium/djvu/labglaswork1.djvu (https://www.thevespiary.org/rhodium/Rhodium/djvu/labglaswork1.djvu)
https://www.thevespiary.org/rhodium/Rhodium/djvu/labglaswork2.djvu (https://www.thevespiary.org/rhodium/Rhodium/djvu/labglaswork2.djvu)
http://chemister.da.ru/Books/Otherbooks/otherbooks.htm (http://chemister.da.ru/Books/Otherbooks/otherbooks.htm)