Citation: Garc\'ia-Mu\~noz, J. L.; Rodr\'iguez-Carvajal, J.; Lacorre, P.; Torrance, J. B. (1992). Neutron-diffraction study of RNiO~3~ (R= La, Pr, Nd, Sm): Electronically induced structural changes across the metal-insulator transition. Physical Review B: Condensed Matter and Materials Physics, 46, pp. 4414-4425.