@book{12951,
	author = {Bauer, Karl Wilhelm and Ruscheweyh, Stephan and Ruscheweyh, Stephan ; jt. auth},
	title = {Differential operators for partial differential equations and function theoretic applications},
	publisher = {Springer-Verlag},
	year = {1980},
	series = {Lecture notes in Mathematics},
	address = {Berlin}
}