1. W. L. Fink:Physical Metallurgy of Aluminum Alloys, p. 62, Cleveland, 1949.
2. A. H. Sulley, H. K. Hardy, and T. H. Heal:J. Inst. Metals, 1949-50, vol. 76, pp. 269–77.
3. H. Y. Hunsicker:Sleeve Bearing Materials, p. 82, ASM, Cleveland, 1949.
4. H. K. Hardy:J. Inst. Metals, 1951-52, vol. 80, pp. 431–34.
5. L. E. Samuels:J. Inst. Metals, 1955-56, vol. 84, pp. 333–36.