Ectypon status religiosi in genere theologice delineatum ... ad S. Emmeramum Ratisbonae ... propositum, praeside P. Henrico Lederman, etc.
Erffa, Emmeramus.
SChachtner, Wolfgangus.
Lederman, Heinrico.
[Ratisbon, 
1743]
Joint authors: Emmerasmus Erffa and Wolfgangus Schachtner.