Meertens L.G.L.T. Paramorphisms / L.G.L.T.Meertens, 1990. - 20 p. - Текст : непосредственный.
Meertens L.G.L.T. Structure-based editing for the ABC programming environment / L.G.L.T.Meertens,S.Permberton,G.van Rossum, 1992. - 19 p. - Текст : непосредственный.
Meertens L.G.L.T. The ergonomics of computer interfaces : Designing a system for human use / L.G.L.T.Meertens,S.Pemberton, 1992. - 26 p. - Текст : непосредственный.