Gao X, Xing Q. Monotonicity Properties of the First Eigenvalue of the Laplacian Operator on Ricci Solitons. Jour. Inform. Math. Sci. [Internet]. 2012 Jul. 10 [cited 2024 Dec. 4];4(2):219-27. Available from: http://rgnpublications.com/journals/index.php/jims/article/view/85