Drazin, P. G. Solitons: an introduction / P.G. Drazin, R.S. Johnson. - Cambridge: Cambridge University Press, 1989. - xii, 226 p. : ill. ; 23 cm. - Cambridge texts in applied mathematics . ISBN: 0521336554 Subjects--Index Terms: Solitons Dewey Class. No.: 515.3/55 / DRA