sponsored by UCLA Extension ... [et al.]. sponsored by ACM Sigsoft ... [et al.]. sponsored by Region v ... [et al.]. sponsored by Bucknell University ... [et al.]. sponsored by ACS ... [et al.]. sponsored by IEEE Long Island Section ... [et al.]. sponsored by IEEE Computer Society ... [et al.]. sponsored by Region 5-IEEE ... [et al.] sponsored by TRW ...[et al.]. sponsored by Region 5-IEEE ... [et al]