A universal language, formed on philosophical and analogical principles

Codex Seraphinianus

Luigi Serafini

Novial Lexike

Otto Jespersen

Philosophical languages in the seventeenth century

Jaap Maat

A short history of the international language movement

Albert Léon Guérard

Dictionnaire du langage des nombres (cesges de damis)

Georges Boucher de Boucherville

An overview of computer-based natural language processing

William B. Gevarter

Terminologie als angewandte Sprachwissenschaft

Eugen Wüster

The artificial language movement

Andrew Large

Language, Mind and Nature

Rhodri Lewis