TY - RPRT TI - Modified airy function and WKB solutions to the wave equation AU - Ghatak, A K AU - Gallawa, R L AU - Goyal, I C PY - 1991 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST MONO 176 DO - 10.6028/NIST.MONO.176 ER -