Bolotina N.B., Khrykina O.N., Azarevich A.N., Shitsevalova N.Yu., Filipov V.B., Gavrilkin S.Yu., Tsvetkov A.Yu., Gab´ani S., Flachbart K., Voronov V.V., Sluchanko N.E. Low temperature singularities of electron density in a two-gap superconductor ZrB12 // Solid State Sciences. – 2023. – V. 142. # 107245. DOI:10.1016/j.solidstatesciences.2023.107245