@BOOK{Fitzgerald&09,
  KEY           = "Fitzgerald\&09",
  AUTHOR        = "John Fitzgerald and Peter Gorm Larsen",
  TITLE         = "{Modelling Systems -- Practical Tools and Techniques in 
                    Software Development}",
  PUBLISHER     = "Cambridge University Press",
  ADDRESS       = "The Edinburgh Building, Cambridge CB2 2RU, UK",
  YEAR          = "2009",
  EDITION       = "{Second}",
  NOTE          = "ISBN 0-521-62348-0",
  ANNOTE        = "",
  COMMENT       = "I have the source PGL"}