Delgado Méndez, M.A., Vanegas Carvajal, M. and Delgado Alvarado, G. 2008. Chemical Metrology II: Estimation of Uncertainty in Measurement of pH in Water. Universitas (León) . 2, 1 (Jul. 2008), 8–18. DOI:https://doi.org/10.5377/universitas.v2i1.1638.