Shepard, Donald: A two-dimensional interpolation function for irregularly-spaced data. ACM National Conference, 1968, s. 517–524. Association for Computing Machinery. doi:10.1145/800186.810616. Verkkoversio (pdf). Viitattu 3.11.2015. (englanniksi) (Arkistoitu – Internet Archive)
doi.org
dx.doi.org
Shepard, Donald: A two-dimensional interpolation function for irregularly-spaced data. ACM National Conference, 1968, s. 517–524. Association for Computing Machinery. doi:10.1145/800186.810616. Verkkoversio (pdf). Viitattu 3.11.2015. (englanniksi) (Arkistoitu – Internet Archive)
Shepard, Donald: A two-dimensional interpolation function for irregularly-spaced data. ACM National Conference, 1968, s. 517–524. Association for Computing Machinery. doi:10.1145/800186.810616. Verkkoversio (pdf). Viitattu 3.11.2015. (englanniksi) (Arkistoitu – Internet Archive)