Magnetocapacitance, magnetoelasticity and magnetopiezoelectric effect in HoFe3(BO3)4 - M. P. Kolodjazhnaja; G. A. Zvjagina; I. V. Bilych; K. R. Zhekov; N. G. Burma; V. D. Fil; I. A. Gudim (Low Temperature Physics, 2018)