@TECHREPORT{Ho99,
  author = {Ho, Wai Ming and J\'{e}z\'{e}quel, Jean-Marc and Le~Guennec, Alain
	and Pennaneac'h, François},
  title = {UMLAUT: an Extendible {UML} Transformation Framework},
  institution = {INRIA},
  year = {1999},
  number = {RR-3775},
  month = {Oct},
  note = {http://www.inria.fr/RRRT/RR-3775.html}
}