Mikusinski, Jan Operational calculus/ Jan Mikusinski. - London: New York: Pergamon Press, [1959]. - 495 p.: illus., 25 cm. - International series of monographs in pure and applied mathematics v. 8. . LCCN: 59011340 /L Nat. Bib. No.: GB59-15477 Subjects--Topical Terms: Calculus, Operational. Dewey Class. No.: 515.72 / M636o