- csic, inst estruct mat, e-28006 madrid, spain5
- ctr cea saclay, cea drf, irfu, f-91191 gif sur yvette, france5
- horia hulubei natl inst r&d phys & nucl engn, eli np, magurele 077125, romania5
- infn, lab nazl legnaro, via romea 4, i-35020 legnaro, italy5
- inst nazl fis nucl, i-20133 milan, italy5
- inst nazl fis nucl, i-20133 milan, italy;univ milan, dipartimento fis, i-20133 milan, italy5
- istanbul univ, fac sci, dept phys, tr-34134 istanbul, turkey5
- kth royal inst technol, s-10691 stockholm, sweden5
- med univ sofia, dept med phys & biophys, sofia 1431, bulgaria5