This article proposes asymptotic methods for calculating Sommerfeld integrals. which enable us to calculate the integral using the expansion of a function into an infinite power series at the saddle point. where the role of a rapidly oscillating function under the integral can be fulfilled either by an exponential or by its product by the Hankel function. The proposed types of Sommerf... https://editsbloomchices.shop/product-category/pet-supplies/