Astrom, Karl J. Computer-controlled systems : theory and design / Karl J. Astrom, Bjorn Wittenmark. - 3rd ed. - Upper Saddle River, N. J. : Prentice-Hall, 1997. - xiv, 557 p. : ill. ; 24 cm. ISBN: 0133148998 (pbk.) 9780133148992 (pbk.) RM466.83 Subjects--Topical Terms: Automatic control--Data processing.