Yaser Ahmad Alhasan, Florentin Smarandache, Mohamed Elghazali Ali Mohieldin Mohamed, Raja Abdullah Abdulfatah. The indefinite integrals of refined neutrosophic trigonometric functions . Neutrosophic Sets Syst. [Internet]. 2024 Aug. 1 [cited 2025 Jun. 3];70:37-44. Available from: https://fs.unm.edu/nss8/index.php/111/article/view/4747