† The research of the first author was sponsored in part by the Air Force Office of Scientific Research, Air Force Systems Command, USAF, under Grant No. AFOSR-76-3046. The work of the second author was supported in part by NSF Grant MPS 71-2884.
Notes
† The research of the first author was sponsored in part by the Air Force Office of Scientific Research, Air Force Systems Command, USAF, under Grant No. AFOSR-76-3046. The work of the second author was supported in part by NSF Grant MPS 71-2884.