Kaushal Rana. Harmonic Mean and Contra-Harmonic Mean Derivative-Based Closed Newton-Cotes Quadrature. Integr. J. Res. Arts Humanities [Internet]. 2022 May 31 [cited 2024 Nov. 7];2(3):55-61. Available from: https://ijrah.com/index.php/ijrah/article/view/36