Mumford, David2009-12-211961Mumford, David B. 1961. Pathologies of modular algebraic surfaces. American Journal of Mathematics 83(2): 339-342.0002-9327http://nrs.harvard.edu/urn-3:HUL.InstRepos:3446005en-USPathologies of Modular Algebraic SurfacesJournal Article2009-12-2110.2307/2372959