@book{149069,
	author = {Albright, J. N. and Los Alamos National Laboratory and Estados Unidos. Department of Energy},
	title = {Microhole Drilling and Instrumentation Technology},
	publisher = {Estados Unidos. Department of Energy},
	note = {Página visitada en mayo de 2003},
	url = {http://www.ees.lanl.gov/pdfs/7_borehole_56.pdf}
}