เอี่ยมพันธ์ อ. Generalized Beauty:Numbers of Digits as 1 at All and Linear Equations. KKU Sci. J. [internet]. 2013 Dec. 30 [cited 2026 Aug. 27];41(4):919-27. available from: https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/249192