Komasa, Dipole and quadrupole polarizabilities and shielding factors of beryllium from exponentially correlated Gaussian functions, Phys. Rev. A, 65(1), 012506 (2001). J. Komasa, Exponentially correlated Gaussian functions in variational calculations. Momentum space properties of the ground state helium dimer, J. Chem. Phys., 115(1), 158–165 (2001). J. Komasa, Lower bounds to the dynamic dipole polarizability of beryllium, Chemical Physics Letters, 363(3-4), 307–312 (2002). J. Komasa, W. Cencek, Exponentially Correlated Gaussian Functions in Variational Calculations. The EF1Σ + g State of Hydrogen Molecule, Computational Methods in Science and Technology, 9(1-2), 79–92 (2003). J. Komasa, In Search for the Negative Polarizability States - the EF1Σ + g State of Hydrogen Molecule, [w:] J. Sabin, red., Advances in Quantum Chemistry, tom 48 z serii Advances in Quantum Chemistry, 151–159, Academic Press (2005). J. Komasa, Theoretical study of the A 1Σ + u state of helium dimer, Molecular Physics, 104(13-14), 2193–2202 (2006). K. Pachucki, J. Komasa, Excitation energy of 9Be, Phys. Rev. A, 73(5), 052502 (2006). J. Komasa, The Σ − states of the molecular hydrogen, Phys. Chem. Chem. Phys., 10, 3383–3389 (2008). W. Cencek, J. Komasa, K.