Korynevskii, N. A.     On the problem of low-temperature ordering in ferro-antiferroelectric mixed compounds [Текст] / N.A. Korynevskii, V.B. Solovyan // IX Polish-Ukrainian meeting and XXIX International School on ferroelectrics physics : progr. and abstr., Krakow, Poland, Sept., 14-18, 2008 / Inst. of Experimental Physics, Univ. of Wroclaw, Inst. of Physics and Informatics, Ped. Univ. of Krakow. — Krakow, 2008. — P. 25.