Giacosa, F., and K. Kyzioł. “Nonexponential Decay Law of the 2P–1S Transition of the H Atom”. Acta Physica Polonica A ISSN 1898-794X , vol. 146, no. 5, Dec. 2024, p. 704, https://doi.org/10.12693/APhysPolA.146.704.