1. Bobrov EG, Komarov VL. Flora of the USSR, Volume 5: Dicotyledoneae, subclass I: Archichlamydeae, order Piperales-Polygonales. Leningrad: Akademia Nauk; 1936 (English 1970), 593 pages, 49 b/w plates.
2. Bussmann RW, editor. Ethnobotany of the Caucasus. Cham: Springer International Publishing; 2017. XXVII, 746p. ISBN 978-3-319-49411-1.
3. Bussmann RW, Glenn A. Traditional Peruvian medicine for the treatment of respiratory disorders. Rev Peru Biol. 2010;17(2):331–46.
4. Bussmann RW, Glenn A. Fighting pain. Traditional Peruvian remedies for the treatment of Asthma, Rheumatism, Arthritis and sore bones. Indian J Tradit Knowl. 2011;10(3):397–412.
5. Bussmann RW, Sharon D. Traditional plant use in Northern Peru: tracking two thousand years of healing culture. J Ethnobiol Ethnomed. 2006;2:47.