Stetsiv, R. Ya.     Charge ordered phases in molecular and crystal hydrogen bonded systems [Текст] / R.Ya. Stetsiv, R.Ya. Yurechko // 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. 34-35.