H.  Pathak, Sahoo, B. K., Das, B. P., Vaval, N., and Pal, S., ?Relativistic equation-of-motion coupled-cluster method: application to closed-shell atomic systems?, Physical Review Applied, vol. 89, no. 4, p. 042510, 2014.

H.  Pathak, Ghosh, A., Sahoo, B. K., Das, B. P., Vaval, N., and Pal, S., ?Relativistic equation-of-motion coupled-cluster method for the double-ionization potentials of closed-shell atoms?, Physical Review A, vol. 90, no. 1, p. Article No. 010501, 2014.

H.  Pathak, Sahoo, B. K., Sengupta, T., Das, B. P., Vaval, N., and Pal, S., ?Relativistic equation-of-motion coupled-cluster investigation of the trends of single and double ionization potentials in the He and Be isoelectronic systems?, Journal of Physics B-Atomic Molecular and Optical Physics, vol. 48, no. 11, p. 115009, 2015.