1. Institute for Micromanufacturing, Louisiana Tech University, Ruston, Louisiana 71270, United States
2. Applied Minerals Inc.,
Dragon Mine, Silver City Rd, Eureka, Utah 84628, United States
3. Institute of Petrochemical Processes, Azerbaijan National Academy of Sciences, Baku 1025,
Azerbaijan
4. Karaganda State Technical University, Karaganda 470075,
Kazakhstan