1. The shape of the lactation curve;Sanders;Journ. Agric. Science,1923
2. A quantitative form of expressing persistency of milk or fat secretion;Turner;Journ. Dairy Science,1926
3. Persistency of lactation in dairy cows;Gaines;Illinois Agric. Exper. Stat. Bull.,1927
4. Measures of persistency of lactation;Gaines;Journ. Agric. Research,1927
5. Bruun , E. Lypsykauden Maidontuotantokäyrään Vaikuttavista Tekijoistä. (Factors influencing the lactation curve and the hereditariness of its shape in East Finnish cattle. - Finnisch m. engl. Zusammenfassung.) Valtion Maatalouskoetoiminnan Julkaisuja 1928