Families of Ultrafilters, and Homomorphisms on Infinite Direct Product Algebras. - George M. Bergman (J. Symb. Log., 2014)

On Vaughan Pratt's crossword problem. - George M. Bergman; Pace P. Nielsen (J. Lond. Math. Soc., 2016)

A Type of Algebraic Structure Related to Sets of Intervals. - George M. Bergman (Order, 2022)