A new criterion for weak subintegrality
In a previous paper the authors, together with Balwant Singh, introduced an elementwisc characterization of weak subintegrality for an extension A⊆B of commutative rings. In the present paper we improve our methods for working with this characterization. This leads us to propose two new types of "elementary weakly subintegral extension".
Reid, Les, and Leslie G. Roberts. "A new criterion for weak subintegrality." Communications in Algebra 24, no. 10 (1996): 3335-3342.
Communications in Algebra