Ahuja, Ravindra K. Network flows : theory, algorithms, and applications / Ravindra K. Ahuja, Thomas L. Magnanti, James B. Orlin. - [S.l.] : Prentice Hall, 1993. - 864 p. ; 24 cm. ISBN: 013617549X 9780136175490 Dewey Class. No.: 658.4032