2022. Validation of Tritium Calibration Curve in CIEMAT/NIST Activity Measurement Using Non Linear Least Squared Fittings and Calculations of the Half-Life and Decay Constant of Potassium-40. Journal of the Nigerian Society of Physical Sciences. 4, 3 (Aug. 2022), 621. DOI:https://doi.org/10.46481/jnsps.2022.621.