Databases, intelligentHenno, JaakSystems & control encyclopedia. Supplementary volume 21992 / p. 707-710 Information structuring by hypertextHenno, JaakSystems & control encyclopedia. Supplementary volume 21992 / p. 800-803 Logic programmingTepandi, JaakSystems & control encyclopedia. Supplementary volume 21992 / p. 817-818 Natural language processingTamm, Boris, inform.Systems & control encyclopedia. Supplementary volume 21992 / p. 823-826 Software availability and reliabilityKarpovsky, E.J.; Tamm, Boris, inform.; Tepandi, JaakSystems & control encyclopedia. Supplementary volume 21992 / p. 938-939 Software lifecyclesParmakson, PriitSystems & control encyclopedia. Supplementary volume 21992 / p. 947-950 Task scheduling (computing)Tommingas, ToomasSystems & control encyclopedia. Supplementary volume 21992 / p. 971-973