World Online. Retrieved 16 May 2021. Fiaschi, Pedro; Groppo, Milton (2008). "Kuhlmanniodendron Fiaschi & Groppo, a new eastern Brazilian genus of Achariaceae
Alberto Huergo, Federico Pinedo, Roberto Ortiz, Carlos Acevedo (Justo), PedroGroppo, Federico Pinedo, Carlos Acevedo (Ortiz), Carlos Acevedo, César Ameghino
Acevedo National Democratic Party 21 June 1973 – 20 February 1938 56 PedroGroppo Independent 20 February 1938 – 2 September 1940 Roberto M. Ortiz 57 Federico
Press. p. 388. ISBN 9780123969545. Fiaschi, Pedro; Groppo, Milton (2008). "Kuhlmanniodendron Fiaschi & Groppo, a new eastern Brazilian genus of Achariaceae
Archive » Sex Drive [on CRASH] Archived 2012-01-31 at the Wayback Machine Groppo, Pedro (2017). "'Death and the Machine: J. G. Ballard's Crash'". Aletria. 27