@Book{companion,
  author = 	 {Frank Mittelbach and Michel Goosens},
  title = 	 {The {\LaTeX} Companion},
  publisher = 	 {Addison-Wesley},
  year = 	 2004,
  edition = 	 {second},
  printing = 	 {first},
  isbn = 	 {0-201-36299-6},
  url = 	 {http://www.awprofessional.com/titles/0201362996}
}
