Choodech Srisawat และ Paisan Nakmahachalasint. (2010) Functional equation analogous to the 3-dimensional laplace equation. Chulalongkorn University:ม.ป.ท.Choodech Srisawat และ Paisan Nakmahachalasint. 2010. Functional equation analogous to the 3-dimensional laplace equation. ม.ป.ท.:Chulalongkorn University;Choodech Srisawat และ Paisan Nakmahachalasint. Functional equation analogous to the 3-dimensional laplace equation. ม.ป.ท.:Chulalongkorn University, 2010. Print.