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

Introduction to lattices and order by Davey, B.A

The invariant sublattices of Bravais types of lattices in four-dimensional space by Evidente, Imogente F.

Design of latticed steel transmission structures

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Sphere packings, lattices, and groups by Conway, John Horton

General lattice theory by Gratzer, George A.

A categorical view of representation by Trance, Aurora S.

Varieties of lattices. by Jipsen, Peter

Lattice theory and the social sciences by Trance, Aurora S.

Lattice points by Kratzel, Ekkehard, 1935