References for studying Winkler's method and CO2 estimation by APHA method

What are the best sources to study and understand


* Process (reactions involved)
* Calculation


of Winkler's method and APHA method for CO2 estimation?




*Ludwig* (actually *Lajos*) *Winkler*, a chemist of hungarian heritage, published his method in 1888 in a German Journal: [*Ber. Dtsch. Chem. Ges.*, **1888**, *21*, 2843-2854](http://gallica.bnf.fr/ark:/12148/bpt6k90715s/f46.image).


Given that and the fact that Hungary was part of the Austro-Hungarian Empire at that time, it isn't overly astonishing that the publication is in German, rather than in English.


A nice description in English, with a discussion of technical obstacles, but without the math or equations, was published by *Patrick G. McCormick* in *J. Chem. Educ.*, **1972**, *49*, 839-841 under the title [*The determination of dissolved oxygen by the Winkler method. A student laboratory experiment*](http://dx.doi.org/10.1021/ed049p839).


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