S. TEETA, R. WANCHANTHUEK, S. SONSUPAP, S. MAENSIRI, N. CHANLEK, and K. WONGSAPROM, “The Structure and ferromagnetism of carbon nanofibers from polyacrylonitrile/ polyvinylpyrrolidone”, J Met Mater Miner, vol. 32, no. 2, pp. 1–10, Jun. 2022.