J. Phys. France, 42 4 (1981) 565-571
Recommend this article
You can advise a colleague about this article by filling this form below.
Your colleague will receive an e-mail containing your message and a link to the selected article.
Here is the text to be sent:
[Your name] recommends the following article:
This e-mail has been sent using a form at https://jphys.journaldephysique.org.