Franken, et al., Physical Review Letters, 7, 110-119 (1961). |
Tomaru, et al., J. Chem. Soc. Chemical Communications, 1207-1208 (1984). |
Wang, et al., Chemical Physics Letters, 120 441-444 (1985). |
Nesmeyanov, et al., Doklady Chem., 221, 229-231 (1975). |
Clement, et al., J. Chem. Soc. Chemical Communications, 654-655 (1974). |
Bozak, et al., Chemistry Letters, 75-76 (1975). |
Xing, G., "Bisthiourea Cadmium . . . ", Zhongguo Jiguang, vol. 14(5) 1987, pp. 302-308. |
Kato, "High Efficiency High Power . . . in Urea", IEEE J. Quantum Electronics, vol. QE-16, No. 8, Aug. 1980. |
Halbout, et al., "Efficient Phase-Matched SHG . . . Urea", IEEE J. Quantum Electronics, vol. QE-15, No. 10, Oct. 1979. |
Cassidy, et al., "Nonlinear Optical Properties of Urea", Optics Communications, vol. 29, No. 2, May 1979, p. 243. |
Betzler, et al., "Optical SHG in Organic Crystals: Urea and Ammonium-Malate", J. Mol. Structure 47 (1978) 393-396. |
Harata, "The Structure of the Cyclodextrin Complex V", Bull. of Chem. Soc. Japan, vol. 50(6) 1416-1424 (1977). |
Zyss, "New Organic Molecular Materials . . . ", J. Non-Cryst. Solids 47.2 (1982) 211-216. |
Kurtz, et al., "A Powder Technique . . . ", J. Appl. Phys. 39, 8, July 1968, p. 3798. |
Morrel, et al., "The Electro-Optic Coefficients of Urea", J. Chem. Phys. 71(12) Dec. 15, 1979, p. 5063. |
Bauerle, et al. "Phase Matched SHG in Urea", Phys. Stat. Sol. (A) 42 (1977) K119. |