OPTICS LETTERS
journal30887
E126051
US
0146-9592
English
Rivista
Optical Society of America:2010 Massachusetts Avenue Northwest:Washington, DC 20036:(800)762-6960, (202)223-8130, EMAIL: custserv@osa.org, INTERNET: http://www.osa.org, Fax: (202)223-1096
1977
can
restricted
false