Stagl, V. (2012). "Richard L. Hoffman (1927–2012) – Obituary"(PDF). Annalen des Naturhistorischen Museums in Wien, B. 114: 5–8. The appendix to Stagl's obituary includes a previously unpublished piece Hoffman wrote on Attems in 2001 entitled "Carl August Theodor Michael Attems: An appreciation."
