Leo E, Ronald R, Egghe L, Rousseau R. A basic indicator for relative contributions and a remarkable difference between a ratio of averages and an average of ratios. MJLIS [Internet]. 2017 Mar. 22 [cited 2024 Dec. 25];19(1). Available from: http://jummec.um.edu.my/index.php/MJLIS/article/view/1802