| Affiliation: |
| AA(Charles University, Faculty of Mathematics and Physics, Astronomical Institute, V Holesovickách 2, 180 00 Prague 8, Czech Republic ), AB(Konkoly Observatory, P.O. Box 67, H-1525 Budapest, Hungary ), AC(Lab. for Information Technology, Eötvös University, Pázmány P. s. 1/A, H-1518 Budapest, Hungary ), AD(Lab. for Information Technology, Eötvös University, Pázmány P. s. 1/A, H-1518 Budapest, Hungary; Department of Physics, Bolyai Military University, H-1581 Budapest, POB 15, Hungary ) |