@book{150670,
	author = {Cooper, George A. and Society of Petroleum Engineers, SPE and Cooper, Alexander G. and Society of Petroleum Engineers, SPE},
	title = {An interactive drilling simulator for teaching and research},
	note = {Reproducidos en el sitio web de Payzone Drilling Simulators.},
	url = {http://maxsimul.com/Publications/DrillingSimulator.pdf}
}