Lattice theory foundation di Gratzer, George A.

Available for University of the Philippines Diliman via SpringerLink. Click here to access

The congruences of a finite lattice a proof-by-picture approach di Gratzer, George A.

General lattice theory di Gratzer, George A.

Math into LaTeX an introduction to LaTeX and AMS-LaTex di Gratzer, George A.

Universal algebra. di Gratzer, George A.