@book{217382,
	author = {Songel, Juan María.},
	title = {Frei Otto :},
	publisher = {Editorial Gustavo Gili,},
	year = {2008.},
	address = {España :},
	note = {Includes the Spanish translation of Frei Otto's Grundlagen einer Baukunst von Morgen, originally published in Der Architekt, Oct. 1997, p. 589-590.}
}