@book{10736,
	author = {Dita, P. and Institutul Central de Fizică (Romania) and Summer School on Conformal Invariance and String Theory},
	title = {Conformal invariance and string theory /},
	publisher = {Academic Press,},
	year = {c1989.},
	series = {Perspectives in physics},
	address = {New York :},
	note = {Lectures delivered at the Summer School on Conformal Invariance and String Theory, held at Poiana Brasov, Romania, Sept. 1-12, 1987, sponsored by the Central Institute of Physics-Bucharest.}
}