You may also wish to search for items by Johnson, P. and Johnson.
Only one matching reference was found.
Hartmann, G.; Johnson, P.C., Measurements of relative transition probabilities and the variation of the electronic transition moment for N2 C3«PI»u-B3«PI»g second positive system, J. Phys. B:, 1978, 11, 1597-1612. [all data]