@article\{ddl-rdggct-07
, author =	"Emilio {Di Giacomo} and Walter Didimo and Giuseppe Liotta"
, title =	"Radial Drawings of Graphs: Geometric Constraints and Trade-offs"
, journal =	"Journal of Discrete Algorithms"
, volume =	6
, number =	"1"
, pages =	"109-124"
, year =	2008
}