@inbook{10.2307/j.ctt130hk7z.1, URL = {http://www.jstor.org/stable/j.ctt130hk7z.1}, bookauthor = {ALEXANDER NAGEL and ΕLIAS M. STEIN}, booktitle = {Lectures on Pseudo-Differential Operators: Regularity Theorems and Applications to Non-Elliptic Problems. (MN-24)}, pages = {[i]--[ii]}, publisher = {Princeton University Press}, title = {Front Matter}, year = {1979} }