@TechReport{MertziosCorneil-AIB0916,
author = "George B. Mertzios and Derek G. Corneil",
title = "Vertex Splitting and the Recognition of Trapezoid Graphs",
institution = "RWTH Aachen",
year = "2009",
number = "AIB-2009-16",
month = "September",
url = "http://aib.informatik.rwth-aachen.de/2009/2009-16.pdf"
}