Team S. Equivalence Problem for The Canonical Form of Linear Second Order Parabolic Equations: Ekkarath Thailert. Thai J Math [Internet]. 2015 Aug. 1 [cited 2024 Dec. 27];13(2):431-47. Available from: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/521