ASTUDILLO, Pedro X.; JIMENEZ, Ramiro; SIDDONS, David C.  and  TIMBE, Bruno. New occurrences and habitat description of southern Ecuador endemic frog Atelopus exiguus (Anura: Bufonidae) from a conservation hotspot in the high Andes. Rev. peru biol. [online]. 2022, vol.29, n.3.  Epub Aug 30, 2022. ISSN 1727-9933.