DTRAP will be available through subscription electronically and print-on-demand.
Another option is to make a purchase recommendation to your institution. Bundled pricing for academic, government, and corporate institutions makes it possible for all individual users within their institutions to have free and unrestricted access to all content published by ACM Journals. Information for libraries is available at libraries.acm.org. To make such a recommendation, please contact your institution’s librarian or information manager.