- M. N. Jipdi, I. F. Fokou, M. Tchoffo, L. C. Fai, “Optical and acoustic polaron formation: Dynamic matrix approach (DMA)”, Eur. Phys. J. Plus, 134, № 10, 2019, 525
- A. V. Soldatov, “On lower bound estimates for the energy spectrum of the Fröhlich polaron model”, Phys. Part. Nuclei, 41, № 7, 2010, 1079