M. Michałowska-Kaczmarczyk Anna, Michałowski Tadeusz, The Balance 2∙f (O) – f (H) as a Cornerstone in Formulation of Electrolytic Systems, Journal of new Developments in Chemistry, Volume 2, Issue 1, 2018, Pages 1-13, ISSN 2377-2549, https://doi.org/10.14302/issn.2377-2549.jndc-18-2177. (http://oap-journals.infojndc/article/845) Keywords: Thermodynamics; Electrolytic systems; Redox titrations; Oxidation numbers.