'Random Search Algorithms' (Electromagnetic Waves, 2011), 'Introduction to Adaptive Arrays', 2nd ed., Chap. 8, pp. 335-364, DOI: 10.1049/SBEW046E_ch8
IET Digital Library, https://digital-library.theiet.org/;jsessionid=18ndpo7okwm6d.x-iet-live-01content/books/10.1049/sbew046e_ch8