Haider Hakim Abed noor, Sajjad Faraj Ghaylan, Salah Hamed Jied, Farah Mohammed Ismael, Ali Adnan Ali, Abbas Sabah Mahdi, Narges Herez Elaibi. Approximation Methods in Quantum Mechanics (Review). Eura. Med.Res. Per [Internet]. 2023 Jun. 20 [cited 2025 Jan. 7];21:189-96. Available from: https://geniusjournals.org/index.php/emrp/article/view/4530