Kumar, A. and Prasad, G. V. (1989) “A Necessary Condition for (F<sub>1</sub>-Effectiveness of(C, L) (N,p<sub>n</sub>) Method”, The Journal of the Indian Mathematical Society, 54(1-4), pp. 139–146. Available at: http://informaticsjournals.com/index.php/jims/article/view/21881 (Accessed: 28 April 2024).