| Cross sections of slow electron scattering by cadmium atoms JE Kontros, L Szoter, IV Chernyshova, OB Shpenik Journal of Physics B: Atomic, Molecular and Optical Physics 35 (10), 2195, 2002 | 44 | 2002 |
| Cross sections and characteristics of electron scattering by calcium, strontium, and barium atoms NI Romanyuk, OB Shpenik, IP Zapesochnyi JETP Lett.(Engl. Transl.);(United States) 32 (7), 1980 | 44 | 1980 |
| Ionization of nitrogen, oxygen, water, and carbon dioxide molecules by near-threshold electron impact AN Zavilopulo, FF Chipev, OB Shpenik Technical physics 50, 402-407, 2005 | 40 | 2005 |
| Electron impact formation of metastable atoms II Fabrikant, OB Shpenik, AV Snegursky, AN Zavilopulo Physics Reports 159 (1-2), 1-97, 1988 | 35 | 1988 |
| Resonance effects in inelastic collisions of slow electrons with cadmium and zinc atoms OB Shpenik, E Kontrosh Zh. Éksp. Teor. Fiz 65, 1797-1805, 1973 | 33 | 1973 |
| Investigation of resonances in the total cross sections for excitation of mercury atoms by slow monoenergetic electrons OB Shpenik, VV Sovter, AN Zavilopulo, IP Zapesochnyi, EE Kontrosh Zhurnal Eksperimentalnoi i Teoreticheskoi Fiziki 69, 48-58, 1975 | 30 | 1975 |
| The electron impact cross sections and features an calcium, strontium and barium atoms NI Romanyuk, OB Shpenik, IP Zapesochnyi Pis’ ma Zh. Eksp. Teor. Fiz 32 (7), 472-475, 1980 | 28 | 1980 |
| Electron impact ionization of gas-phase guanine near the threshold AN Zavilopulo, OB Shpenik, AS Agafonova Journal of Physics B: Atomic, Molecular and Optical Physics 42 (2), 025101, 2009 | 25 | 2009 |
| Study of low-energy scattering of electrons by Mg and Ca atoms using an optimized trochoidal spectrometer NY Romanyuk, OB Shpenik, FF Papp, YV Chernishova, JA Mandyi, ... Ukrainskij Fizicheskij Zhurnal 37 (11), 1639-1647, 1992 | 20 | 1992 |
| Dissociative ionisation of O2 and CO2 by electron impact: Energy and angular distributions of fragments AI Zhukov, AN Zavilopulo, AV Snegursky, OB Shpenik Journal of Physics B: Atomic, Molecular and Optical Physics 23 (13), 2373S, 1990 | 18 | 1990 |
| Effective electron scattering cross-sections for zinc atoms OB Shpenik, IV Chernyshova, JE Kontros Radiation Physics and Chemistry 68 (1-2), 277-280, 2003 | 17 | 2003 |
| Excitation of metastable levels of noble-gas atoms in crossed electron and gas dynamical atomic beams OB Shpenik, AN Zavilopulo, AV Snegursky, II Fabrikant Journal of Physics B: Atomic and Molecular Physics 17 (5), 887, 1984 | 17 | 1984 |
| Ionization of guanine, adenine and thymine molecules by electron impact A Ostroverkh, A Zavilopulo, O Shpenik The European physical journal D 73, 1-11, 2019 | 16 | 2019 |
| Mass spectrometry of d-ribose molecules AN Zavilopulo, OB Shpenik, AN Mylymko, VY Shpenik International Journal of Mass Spectrometry 441, 1-7, 2019 | 15 | 2019 |
| Ionization and dissociative ionization of methane molecules AN Zavilopulo, MI Mykyta, AN Mylymko, OB Shpenik Technical Physics 58, 1251-1257, 2013 | 15 | 2013 |
| Electron impact ionization of the gas-phase sorbitol I Chernyshova, P Markush, A Zavilopulo, O Shpenik The European Physical Journal D 69, 1-7, 2015 | 14 | 2015 |
| Luminescence of cytosine vapor excited by slow electrons OB Shpenik, NM Erdevdy, VV Zvenighorodsky, LG Romanova Journal of Applied Spectroscopy 80, 43-46, 2013 | 14 | 2013 |
| Crossed-field (trochoidal) electron monochromators and their optimization MI Romanyuk, OB Shpenik Measurement Science and Technology 5 (3), 239, 1994 | 14 | 1994 |
| Precision measurements of optical excitation functions for the mercury atom NM Erdevdi, OB Shpenik, VS Vukstich Optics and Spectroscopy 95, 529-536, 2003 | 13 | 2003 |
| Electron excitation of mercury atom spectral lines at meV resolution OB Shpenik, NM Erdevdy, VS Vukstich Radiation Physics and Chemistry 68 (1-2), 281-284, 2003 | 13 | 2003 |
