1. 1) E. H. Chairman : offi.Dig., 32, 1449 (1960)
2. 5) H. G. Phillips. Jr ; Paint Varn. 46, [8] : 27 (July 1956)
3. 6) W. H. Shrader, M. J. Bondner ; Bonding of Polyethylene, (mar, 1957)
4. 7) W. T. M. Johnson ; offi. 33, 1496 (1961)
5. 8) T. E. Hayden : Metal finish 7, 49 (1961)