References
- Millman , W. S. , Ulla , M. , Zhilan , Han , Maclaurin , M. and Tonner , B. P. 1989 . J. Mater. Res. , 2 : 543
- Balboni , R. and Valdre , U. 1989 . Supercond. Sci. Technol. , 2 : 159
- Wells , Oliver C. 1974 . Scanning Electron Microscopy , 202 New York : McGraw-Hill Book Company .
- Eremenko , V. V. , Fugol , I. Ya. , Samovarev , V. I. and Zhuravlev , V. M. 1988 . Pisma v ZETF , 47 : 529