Document Type

Journal Article

Role

Author

Standard Number

0031-9007

Journal Title

Physical Review Letters

Volume

18

Issue

14

First Page

557

Last Page

559

Publication Date

1967

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.