You are looking for
Physical review letters
Author:
Gruler, H.
ISSN:
0031-9007
Date:
03/1980
Volume:
44
Issue:
9
Page:
590-592
DOI:
10.1103/PhysRevLett.44.590
Search CrossRef
for a DOI link to the full text
Sorry, CrossRef was unable to find a full-text link for your citation.