Michael Closson Shane Gartshore John R. Johansen Stephen K. Wismath Fully Dynamic 3-Dimensional Orthogonal Graph Drawing. 49-58 1999 conf/gd/1999 Graph Drawing http://link.springer.de/link/service/series/0558/bibs/1731/17310049.htm db/conf/gd/gd1999.html#ClossonGJW99