This package is distributed under the ACM license at http://www.acm.org/publications/policies/software-copyright-notice In detail: 1. Fortran code (src/*.f except src/bilinear.f): Copyrighted and Licensed by ACM, see http://www.acm.org/publications/policies/software-copyright-notice 2. R interface (src/init.c src/akima.h R/*.R man/*.Rd data/* except */bilinear.*) The R interface code has been developed as work based on the ACM licensed code, hence it is also ACM licensed, copyright is by A. Gebhardt . In order to fulfill the ACM copyright and license noted above, it is stated here that this work contains modified ACM material, and to fulfill this, the modified work including the R interface is available free to secondary users, and no charge is associated with such copies. 3. Bilinear interpolation (*/bilinear*): Copyright A. Gebhardt, free to reuse whithout restrictions.