| Title | Calculation of the System Focusing Electron Beam in the Ion Source of Mass Spectrometer with Electron Impact Ionization | |
| Authors | О.S. Kuzema, P.O. Kuzema | |
| Issue | Volume 3, Year 2011, Number 3 | |
| Pages | 085 - 089 | |
| Title | Elimination of Ferromagnetic Particles Aggregation for Investigation by Electron Microscopy | |
| Authors | О.S. Kuzema, P.O. Kuzema | |
| Issue | Volume 3, Year 2011, Number 4 | |
| Pages | 055 - 059 | |