The Lattice of Subquasivarieties of a Locally Finite Quasivariety
ISBN 978-3-319-78234-8, © 2018
Book Series : CMS/Springer Books in Mathematics
Equations and Inequalities
Elementary Problems and Theorems in Algebra and Number Theory ISBN 978-0-387-98942-6, © 2000
Abelian Groups and Representations of Finite Partially Ordered Sets
ISBN 978-0-387-98982-2, © 2000