Wolfgang Roesner SESPATH: An ER Manipulation Language. 72-81 1985 ER db/conf/er/er85.html#Roesner85 conf/er/85 er85/ER85-P072.pdf db/conf/er/Roesner85.html ... journals/tods/Chen76 ... ... conf/er/79 conf/er/Chen79a conf/sigmod/Codd71 ... ... ... journals/tods/Kent79 ... conf/er/MarkowitzR83a ... ... journals/cl/SchiffnerS79 conf/er/ScheuermannSW79 conf/er/Shoshani79 journals/cacm/SmithS77 journals/tods/SmithS77 ... ... ...