TY  - RPRT
TI  - Calibration service for instruments that measure laser beam diameter 
AU  - Yang, Shao
PY  - 2010
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST SP 250-87
DO  - 10.6028/NIST.SP.250-87
ER  -