halasinski, R. Bukowski, S.M. Cybulski, and M. T. Berry,  J. Chem. Phys. 112, 2195 (2000).</font>

<tr><td>nh3he_wheatley  <td>none<td>NH<sub>3</sub>(X)+He [scaled perturbation theory PES]

<tr><td><td><td><font size=-1>M. P. Hodges and R. J. Wheatley, J. Chem. Phys. 14 , 8836 (2001).</font>

<tr><td>nh3h2_1993  <td>fitvij.h2<td>NH<sub>3</sub>(X)+H<sub>2</sub> [<i>ab initio</i> PES, Valiron expansion of the potential]

<tr><td><td><td><font size=-1>C. Rist, M. H. Alexander, and P. Valiron, J. Chem. Phys. 98