Sarat Sinrapavongsa และ Ajchara Harnchoowong. (2012) Integers of the form x² + dy² in some quadratic fields. Chulalongkorn University:ม.ป.ท.Sarat Sinrapavongsa และ Ajchara Harnchoowong. 2012. Integers of the form x² + dy² in some quadratic fields. ม.ป.ท.:Chulalongkorn University;Sarat Sinrapavongsa และ Ajchara Harnchoowong. Integers of the form x² + dy² in some quadratic fields. ม.ป.ท.:Chulalongkorn University, 2012. Print.