1. Molybdenum Compounds: Their Chemistry and Technology;Killeffer,1952
2. U.S. Patent No. 1,714,565 (1927) to W. Koehler
3. U.S. Patent No. 2,156,803 (May 3, 1934), to H. S. Cooper and V. R. Damuell
4. U.S. Patent No. 2,284,785 (1939), to J. E. Wilkey
5. Molybdenite as a new lubricant;Bell;Phys. Rev.,1941