Author: Yanli Niu Zhengrong Luo Yanfang Zhang Qinglin Zhang
Publisher: Cryoletters
ISSN: 1742-0644
Source: Cryoletters, Vol.33, Iss.1, 2012-01, pp. : 69-74
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract