1 |
D. Larry and Cunningham: columbium(niobium) and tantalum, (1999) 21
|
2 |
C. J. Smithells: Met. Ind. (Lond.), 38 (1931) 336
|
3 |
Hamilton C. B. and Wilhelm H. A.: Proc. Iowa. Acad. Sci., 68 (1961) 189
|
4 |
M. Baba, Y. Ono and R. O. Suzuki: J. Phys. Chem. Solids, 66 (2005), 466
DOI
ScienceOn
|
5 |
JFE Mineral: JFE Giho (Technical report from JFE Co. Ltd.) 8 (2005), 63
|
6 |
Kontantinov V. I., Sklyarenko S. I. and Kholesbes E. A.: Poroskovaya Met. Acad. Nauk SSRI 4 (1961) 47
|
7 |
E. G. Hellier and G. L. Martin: US Patent 2,950,185 (1960)
|
8 |
C. A. Hampel(ed.): Rare Metals Handbook, London, Reinhold, (1961)
|
9 |
K. Wayne, H. Waban and P. Jpseph: U. S. Patent 2,927,855, March 8 (1960)
|
10 |
J. T. Kelly and G. A. Rees: Canadian Patent 657,596 (1963)
|
11 |
D. K. Bose, J. C. Sehra and P. K. Jena: Trans. Indian Inst. Met., 23 (1970) 1
|
12 |
C. K. Gupta and P. K. Jena: Trans. Indian Inst. Met., 22 (1969) 51
|
13 |
S. C. Jain, D. K. Bose and C. K. Gupta: Trans. Indian Inst. Met., 24 (1971) 1
|