Dai, Linhui; Guan, Qiao; Liu, Hong: 'Robust image registration of printed circuit boards using improved SIFT-PSO algorithm', The Journal of Engineering, 2018, 2018, (16), p. 1793-1797, DOI: 10.1049/joe.2018.8274
IET Digital Library, https://digital-library.theiet.org/;jsessionid=dsfed0asc7d65.x-iet-live-01content/journals/10.1049/joe.2018.8274