Mercado, M.I., Coll Araoz, M.V., Ruiz, A.I., Grau, A. and Ponessa, G.I. 2019. Structure, ultrastructure and ontegenetic development of glandular trichomes of Smallanthus sonchifolius (Asteraceae), «yacón». Lilloa. 49, 1 (Nov. 2019), 40–51.