1. P. A. Arsenev, K. E. Bienert, and R. K. Sviridova, ?Spectral properties of neodymium ions in the lattice of GdScO3 crystals,? Phys. Status. Solidi. (a),41, K103?104 (1972).
2. Kh. S. Bagdasarov, A. A. Kaminskii, A. M. Kevorkov, et al., ?Studies on stimulated emission of cubic YScO3 crystals doped with Nd3+ ions,? Dokl. Akad. Nauk SSSR, 224, No. 4, 798 (1975).
3. R. K. Sviridova and P. A. Arsen'ev, ?Spectra of ScYO3 crystals containing Nd3+ ions,? Zh. Prikl. Spektrosk.,17, No. 5, 888?890 (1977).
4. P. A. Arsenev, Kh. S. Bagdasarov, A. V. Potemkin, and V. V. Fenin, ?Spectra of absorption, luminescence and stimulated emission of neodymium in crystals of mixed yttrium and gadolinium scandates,? Phys. Status. Solidi. (a),44, 51?57 (1977).
5. N. A. Toropov, V. P. Barzakovskii, V. V. Lapin, et al., Phase Diagrams of Silicate Systems [in Russian], Nauka, Leningrad (1969).