@book{629,
	author = {Frondizi, Risieri.},
	title = {El yo como estructura dinámica.},
	publisher = {Editorial Paidós},
	year = {1970.},
	series = {Biblioteca del hombre contemporáneo, 224.},
	address = {Buenos Aires},
	note = {1950 ed. has title : El problema del yo; problema del yo.}
}