@phdthesis{RISC4144,
author = {Franz Lichtenberger},
title = {{PL/ADT: Ein System zur Verwendung algebraisch spezifizierter abstrakter Datentypen in PL/I}},
language = {english},
year = {1980},
translation = {0},
school = {RISC, Johannes Kepler University Linz},
length = {0}
}