sponsored by ACS ... [et al.]. sponsored by TRW ...[et al.]. sponsored by ACM Sigsoft ... [et al.]. sponsored by Region v ... [et al.]. sponsored by UCLA Extension ... [et al.]. sponsored by Region 5-IEEE ... [et al.] sponsored by ACM, IEEE. sponsored by ACM, MIT. sponsored by Region 5-IEEE ... [et al] sponsored by Nuclear Committees ...[et al.].