A NEW ABSOLUTE FREQUENCY REFERENCE GRID IN THE 28 THz RANGE A. Clairon, A. Van Lerberghe, Ch. Bréant, Ch. Salomon, G. Camy et Ch. J. BordéJ. Phys. Colloques, 42 C8 (1981) C8-127-C8-135DOI: https://doi.org/10.1051/jphyscol:1981815