Palomares-Sánchez, S., Ponce-Castañeda, S., Ruiz, F., Mirabal-García, M., Martínez, J. R., & Díaz-Castañón, S. (1999). Structural and magnetic characterization of (Ba,Sr)-hexaferrite Powders. Revista De Metalurgia, 35(3), 143–147. https://doi.org/10.3989/revmetalm.1999.v35.i3.617