@book{13037,
	author = {Boboc, N and Mustata, P. and Mustata, P.; jt. auth.},
	title = {Espaces harmoniques associes aux operateurs differentiels lineaires du second ordre de type elliptique},
	publisher = {Springer-Verlag},
	year = {1978},
	series = {Lecture notes in Mathematics},
	address = {Berlin}
}