Elementary Analysis (ISBN: 038790459X)
Ross, Kenneth A.

Elementary Concepts of Topology (ISBN: 048660747X)
Alexandroff, Paul

Elementary Geometry of Algebraic Curves (ISBN: 0521646413)
C. G. Gibson

Elementary Theory of Analytic Functions of One or Several Complex Variables (ISBN: 0486685438)
Henri Cartan

Elements of Mathematics. Algebra II, Chapters 4 - 7. (ISBN: 3540007067)
Bourbaki, Nicolas

Elliptic Partial Differential Equations of Second Order (ISBN: 3540411607)
Gilbarg, David; Trudinger, Neil S.

Entire Solutions of Semilinear Elliptic Equations (ISBN: 3764353236)
Kuzin, I.; Pohozaev, S.