[1] G. Grätzer: General Lattice Theory. Birkhäuser Verlag, 1978. MR 0504338

[2] V. Slavík: A note on the lattice of intervals of a lattice. to appear. MR 0873591

[3] V. I. Igošin: The lattices of intervals and convex sublattices of lattices. (Russian), Uporjadočennyje množestva i rešetki, Saratov 1980, 69-76.