TY - JOUR AU - M Krishnamurthy AU - J de Gouw AU - L Ding AU - V Bierbaum AU - S Leone C2 - Journal of Chemical Physics DA - 1997-01-01 00:01:00 LA - en M1 - 106 PB - Journal of Chemical Physics PY - 1997 TI - Mobility and formation kinetics of NH4+ (NH3)n cluster ions (n=0-3) in helium and helium/ammonia mixtures ER -