1.
Simulik VM, Zajac TM, Tymchyk RV. Choice of the Wave Function for the Helium Ground State for Precision Calculations of Quasistationary State Parameters. Ukr. J. Phys. [Internet]. 2019 Jan. 4 [cited 2024 Nov. 23];61(11):950. Available from: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019009