You may also wish to search for items by Wan, B. and Wan.
Only one matching reference was found.
Wan, B.N.; Langhoff, H., The absorption spectrum of carbon monoxide in the CO(3«PI»r, a) state betw4en 215 nm and 285 nm, Z. Phys. D: At. Mol. Clusters, 1991, 21, 245-249. [all data]