Citation: Belokoneva, E.L.; Ivanova, A.G.; Dimitrova, O.V.; Stefanovich, S.Yu. (2002). New nonlinear optical crystals of Ln (B4 O6 (O H)2) Cl (Ln = Pr, Nd) and their structural relation to pentaborates in terms of the OD theory. Zhurnal Neorganicheskoi Khimii, 47, pp. 370-377.