Articles

On a Recently Discovered French Cave Postmark. 1982. 9: 14.
The Cave Bird. 1983. 11: 4. ( with E. de Bellard Pietri)
The Two Grutas de Rumichaca: Which one is represented on the Stamps? 1984. 15: 9.
The Alpine Clubs in France and Italy. 1984. 17: 11.
Saint Ignacius Loyola. 1985. 19: 16.
La santa Cueva in Manresa (Spain). 1986. 25: 6-7.
The Two Grutas de Rumichaca (Ecuador). 1986. 25: 8-10.
Grotte de Poséidon. 1995. 46: 24.
A Caver in the sky. 1995. 47: 16.
Le village troglodytique de Rochemenier. 2004. 72:7.