Alexander Feher, Vladimir Desnenko, Elena Fertman, Sergiy Dolya, Marcela Kajňaková, and Anatoly Beznosov, Direct evidence of the low-temperature cluster-glass magnetic state of Nd_2/3Ca_1/3MnO₃ perovskite: Магнетизм, Low Temp. Phys. 38, (2012) [Fiz. Nizk. Temp. 38, 828-832, (2012)] DOI: https://doi.org/10.1063/1.4736614.