@article{SchulzeSvH14, author = {Christoph Daniel Schulze and Miro Sp{\"o}nemann and Reinhard von Hanxleden}, title = {Drawing Layered Graphs with Port Constraints}, journal = {Journal of Visual Languages and Computing, Special Issue on Diagram Aesthetics and Layout}, volume = {25}, number = {2}, year = {2014}, pages = {89--106}, doi = {10.1016/j.jvlc.2013.11.005}, issn = {1045-926X}, pdf = {jvlc13.pdf}, htmlnote = {The \href{http://dx.doi.org/10.1016/j.jvlc.2013.11.005}{original publication} is available at \href{http://www.sciencedirect.com}{www.sciencedirect.com}.}, }