@book{kopka-1993a,
	title = {A Guide to {\LaTeX } Document Preparation for Beginners and Advanced
	Users},
	address = {Wokingham, England},
	author = {Helmut Kopka and Patrick W. Daly},
	edition = {First},
	publisher = {Addison-Wesley},
	year = {1993},
	biburl = {http://www.bibsonomy.org/bibtex/22bb459889829a440317800bae9fa17f6/dmartins},
	description = {robotica-bib},
	notes = {A SRL reference.},
	keywords = {imported }
}

@book{kopka:99a,
	title = {A guide to LaTeX},
	address = {Reading, MA, USA},
	author = {Helmut Kopka and Patrick W. Daly},
	edition = {Third},
	publisher = {Addison Wesley},
	year = {1999},
	biburl = {http://www.bibsonomy.org/bibtex/2c7f01b541d0c0907f5c0921be48bc553/hanappe},
	keywords = {imported }
}