1. Official methods of analysis,1975
2. Feeding value of aerobic deterioration treated and propionic acid-treated corn silage for lactating dairy cow;Bando;Bull. Hokkaido Prefactural Shintoku Anim. Husbandry Exp. Stn.,1979
3. SAS User's guide. 1979 ed;Barr,1979
4. Baumgardt, B. R. 1964. Practical observations on the quantitative analysis of free volatile acids (VFA) in aqueous solutions by gas-liquid chromatography. Dep. Bull. 1, Dairy Sci. Dep., Univ. Wisconsin, Madison.
5. Meld;Breirem;Norg-Landhr-Hogsk,1954