1.
Ntienjem E. Elementary Evaluation of Convolution Sums Involving the Divisor Function for a Class of Levels. NWEJM [Internet]. 2019 Aug. 5 [cited 2024 Nov. 22];(5):99-162. Available from: https://nwejm.univ-lille.fr/index.php/nwejm/article/view/40