1. 3) W. FUNKE and H. ZATLOUKAL : Farbe u Lack, 84 (1978), p. 584
2. 4) S. GURUVIAH : JOCCA, 53 (1970), p. 669
3. 5) K. BAUMANN : Plaste and Kautschuk, 19 (1972), p. 455, p. 699
4. 6) J.E.O. MAYNE : Official Digest, 24 (1952), p. 127
5. 13) P. WALKER : J. Paint Technol., 31 (1967) 8, p. 22