Huynh, Trong-Thua; Tran, Thong-Nhat; Tran, Cong-Hung; Dinh-Duc, Anh-Vu: 'Delay constraint energy-efficient routing based on Lagrange relaxation in wireless sensor networks', IET Wireless Sensor Systems, 2017, 7, (5), p. 138-145, DOI: 10.1049/iet-wss.2017.0038
IET Digital Library, https://digital-library.theiet.org/;jsessionid=645u4y3u16qe.x-iet-live-01content/journals/10.1049/iet-wss.2017.0038