1. Institute of Experimental Physics, Slovak Academy of Sciences, Kosice, Slovak Republic
2. Joint Institute for Nuclear Research, Dubna, Russia
3. Mathematical and Physical Science Foundation, 4200 Slagelse, Denmark
4. College of Vestsjaelland South, Herrestraede 11, 4200 Slagelse, Denmark
5. Department of Mathematics, King Abdulaziz University, 21589 Jeddah, Saudi Arabia
6. The Pacific Institute for the Mathematical Sciences, The University of British Columbia, Earth Sciences Building, 2207 Main Mall, Vancouver, BC V6T 1Z4, Canada
7. Department of Physics, Simon Fraser University, V5A 1S6 Burnaby B.C., Canada