Co, Nguyen, 		Thi Thu Thuy, Bui, 		Thi Luong, Nguyen, 		Quoc Viet, Dong, 		Viet Cuong, Le, 		Duc Dung, Dang, 		Duc Quan, Ngo, 		Mau Danh, Tran, 		Duc Thang, Pham, AND 		Dinh Tu, Bui.
" Characterization and Microwave Absorption Properties  of Lead-Free Bi0.5(Na0.80K0.20)0.5TiO3  Synthesized by Sol-Gel Method" <em>VNU Journal of Science: Mathematics - Physics</em> [Online], Volume 38 Number 1 (24 March 2022)