95 Paperback Lecture notes in pure and applied mathematics QA247 This comprehensive treatment of an under-studied aspect of commutative algebra describes various simple extensions and their properties, in particular properties of simple ring extensions of Noetherian integral domains.

95 Paperback Lecture notes in pure and applied mathematics QA372 Burd (Yaroslavl State University) explains the theory of the method of averaging on the infinite interval in a modern form, and presents some results in the application of the theory.