Elementary analysis of raw meal for cement manufacture by laser excitation /
Meric, J. P.
Le Jean, Y.
Caron, J. F.
Garston :  Building Research Establishment, 
1974.
Revue des Materiaux, 1973 (684), 36-42. d'Etudes et de Recherches de l'Industrie des Liants Hydraulique, Publication No. 233.