Existentially Closed Models via Constructible Sets: There are 2aleph0 Existentially Closed Pairwise Non Elementarily Equivalent Existentially Closed Ordered Groups.

Anatole Khelif Existentially Closed Models via Constructible Sets: There are 2aleph0 Existentially Closed Pairwise Non Elementarily Equivalent Existentially Closed Ordered Groups. 277-284 1996 61 J. Symb. Log. 1 db/journals/jsyml/jsyml61.html#Khelif96 http://projecteuclid.org/euclid.jsl/1183744939