Journal of Engineering MathematicsApril 1968, Volume 2, Issue 2, pp 206–206 | Cite asBook reviewAuthorsAuthors and affiliationsA. J. W. DuijvestijnArticle 8 Downloads This is a preview of subscription content, log in to check access.Copyright information© Wolters-Noordhoff Publishing 1968Authors and AffiliationsA. J. W. DuijvestijnThere are no affiliations available