1. VšĮ “Aukštieji algoritmai”; A. Mickevičiaus g. 29 LT-08117 Vilnius Lithuania
2. Department of General Physics and Spectroscopy; Faculty of Physics; Vilnius University; Saulėtekio al. 9 LT-10222 Vilnius Lithuania
3. ACD/Labs, Inc.; 8 King Street East, Suite 107 Toronto Ontario Canada M5C 1B5