@techreport{pub6121,
author = {
Graf, Winfried
and
Neurohr, Stefan
},
title = {Using Graphical Style and Visibility Constraints for a Meaningful Layout in Visual Programming Interfaces},
series = {DFKI Research Reports (RR)},
year = {1994},
volume = {94-15},
pages = {20},
institution = {DFKI}
}