Pestrenin Valery M., Pestrenina Irena V., Landik Lidiya V. «Restrictions on stress components in the top of round cone» // Tomsk State University Journal of Mathematics and Mechanics 2018. №52 C.89-101
Landik Lidiya V., Pestrenin Valeriy M., Pestrenina Irena V. «Restrictions on stress components in the vertices of regular triangular and quadrangular pyramids embedded in elastic body» // Tomsk State University Journal of Mathematics and Mechanics 2019. №62 C.119-134