IR luminescence from the 1G4 multiplet of Pr3+ in various doped crystals C. GARAPON, M. MALINOWSKI, M.F. JOUBERT, A.A. KAMINSKII et B. JACQUIER J. Phys. IV France, 04 C4 (1994) C4-349-C4-352 DOI: 10.1051/jp4:1994483