Abatal, M. “Structural, Electrical and Magnetic Properties of the Pyrochlorate Er_2-X Sr_x Ru_2O_7 (0<=x<=0.10) System”. Revista Mexicana De Física, vol. 64, no. 3 May-Jun, Apr. 2018, pp. 222-7, doi:10.31349/RevMexFis.64.222.