L. F. C. Friele

Color metrics : Proceedings of the Helmholtz Memorial Symposium on Color Metrics September 1-3, Driebergen 1971

J. J. Vos, P. L. Walraven, L. F. C. Friele, 1972 .

Color metrics : proceedings

P. L. Walraven, Johannes J. Vos, L. F. C. Friele, 1972 .

THE APPLICATION OF COLOUR MEASUREMENT IN RELATION TO FIBRE-BLENDING

L. F. C. Friele, L. Friele, 1952 .

Fine color metric (FCM)

L. F. C. Friele, L. Friele, 1978 .