Nicolaus Copernicus University 11 Gagarina str., 87-100 Torun, Poland Phone: +48 56 611 30 40, mobile: +48 885 101 723 e-mail: annan@astro.umk.pl
Jagiellonian University 171 Orla str., 30-244 Cracow, Poland Phone: +48 12 623 8654 e-mail: soida@oa.uj.edu.pl
