549,794 TWIZELL E. H. Numerical methods, with applications in the biomedical sciences / E. H. Twizell. - Chichester : Ellis Horwood Lmt. Publ. ; New York [etc.] : A John Willey and Sons, Inc., Publ., [1988]. - 339, [2] s. ; 25 cm (Mathematics and its Applications) ISBN 0-7458-0027-0 (Ellis Horwood Ltd) ISBN 0-470-21002-8 (Halsted Press)