Pseudozeros of multivariate polynomials. - J. William Hoffman; James J. Madden; Hong Zhang (Math. Comput., 2003)

The H-Closed Monoreflections, Implicit Operations, and Countable Composition, in Archimedean Lattice-Ordered Groups with Weak Unit. - Anthony W. Hager; James J. Madden (Appl. Categorical Struct., 2016)