1. D.M. Cavagnaro (NTIS Rept. PS-78/0811/6GA [1978] 221 p)
2. D.M. Cavagnaro (NTIS Rept. PS-78/0812/4GA [1978] 103 p)
3. D.M. Cavagnaro (NTIS Rept. PS-78/0813/2GA [1978] 101 d)
4. U.G. Argo (NWSIA 5th Ann. Conf. San Diego, Calif. [1977])
5. Anonymous (Public Works 108, No 9 [1977] 166)