1. Polish-Japanese Institute of Information Technology, ul. Koszykowa 86, 02-008 Warsaw, Poland. E-mail: jnowacki@pjwstk.waw.pl
2. Insitute of Crystallography RAS, Leninskii prospect 59, 117333 Moscow, Russia. E-mail: alshits@ns.crys.ras.ru
3. Kielce University of Technology, Al.1000-lecia Pan·stwa Polskiego 7, 25-314 Kielce, Poland. E-mail: radowicz@tu.kielce.pl