Structural and mechanic properties of RFeO3 with R = Y, Eu and La perovskites: a first-principles calculationM. Romero, R. Escamilla, V. Marquina and R. GómezEur. Phys. J. D, 69 7 (2015) 177DOI: https://doi.org/10.1140/epjd/e2015-60186-4