TY - JOUR T1 - On the formation mechanisms of hydrogen ionic clusters JO - Brazilian Journal of Physics A1 - Barbatti, M. A1 - Nascimento, M. A. C. SN - 0103-9733 UL - 10.1590/S0103-97332003000400032 VL - 33 Y1 - 2003 PB - Brasil ER -