Schwarz, Ralph J. Linear Systems / Ralph J. Schwarz and Bernard Frienland - Reading, Mass. : Addison-Wesley, 1965. - xvii, 492 p. : ill. ; 25 cm. Includes index. Subjects--Topical Terms: Algebras, Linear. LC Class. No.: QA184 / .W525 1988 Dewey Class. No.: 512.5 / SCL 1965