@book{143971,
	author = {Stragiotti, Stephen and Statoil and SPE Annual Technical Conference and Exhibition (2001 sept. 30-3 oct. : New Orleans) and Skeie, Terje and Statoil},
	title = {New applications for 2 1/8'' well tractor inside 5'' drill pipe},
	note = {Disponible en formato PDF.}
}