@book{12766,
	author = {Maslov, V. P. and Nazaikinskii, V. E. and Nazaikinskii, V. E.; jt. auth.},
	title = {Asymptotics of operator and pseudo-differential equations},
	publisher = {Consultants Bureau},
	year = {1988},
	series = {Contemporary Soviet Mathematics},
	address = {New York}
}