Kellogg, O. D. Foundations of Potential Theory. Springer International Publishing.
Cita Chicago (17th ed.)Kellogg, Oliver Dimon. Foundations of Potential Theory. Cham: Springer International Publishing.
Cita MLA (8th ed.)Kellogg, Oliver Dimon. Foundations of Potential Theory. Springer International Publishing.
Atenció: Aquestes cites poden no estar 100% correctes.