@book{56368,
	author = {Sierra, Gonzalo.},
	title = {A simple method for the detection of lipolytic sctivity of micro-organisms and some obsrvations on the influence of the contact betwee cells and fatty sustrates},
	note = {Sobretiro de:Antonie Leeuwenhoek J. Microb. Serol. 23:15-22, 1957}
}