Study Week on Molecular Forces, April 18-23, 1966, Pontificia Academia Scientiarvm, Citta del Vaticano.
Study Week on Molecular Forces, April 18-23, 1966, Pontificia Academia Scientiarvm, Citta del Vaticano.
- Amsterdam/New York North-Holland/John Wiley 1967
- Pontificiae Academiae Scientiarvm Scripta Varia :31. .