Said Laachir and Aziz Laaribi, Exact Solutions of the Helmholtz equation via the Nikiforov-Uvarov Method. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. November 2013, vol. 73(1). 170 - 173 [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/9996665.