Swarztrauber, P., & Sweet, R. (1975). Efficient FORTRAN subprograms for the solution of elliptic partial differential equations. National Center for Atmospheric Research.
Chicago-viite (17. p.)Swarztrauber, Paul, ja Roland Sweet. Efficient FORTRAN Subprograms for the Solution of Elliptic Partial Differential Equations. Boulder, Colorado: National Center for Atmospheric Research, 1975.
MLA-viite (9. p.)Swarztrauber, Paul, ja Roland Sweet. Efficient FORTRAN Subprograms for the Solution of Elliptic Partial Differential Equations. National Center for Atmospheric Research, 1975.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.