OF Orikpete, TG Leton, OLY Momoh. Assessment of Helicopter Flyover Noise for Tonal Components. GJMR [Internet]. 2020 Oct. 15 [cited 2024 May 7];20(F11):31-59. Available from: https://medicalresearchjournal.org/index.php/GJMR/article/view/2280