Semerenko, Y.A. 2021. Energy Activation Spectrum of Low-Temperature Acoustic Relaxation in High-Purity Iron Single Crystal. Solution of the Inverse Problem of Mechanical Spectroscopy by the Tikhonov Regularization Method. East European Journal of Physics. 2 (Apr. 2021), 73-80. DOI:https://doi.org/10.26565/2312-4334-2021-2-03.