Atalay A I, Ozkan C O, Kaya E, Kurt O and Kamalak A 2017:
Effect of maturity on chemical composition and nutritive value of leaves of Arbutus andrachne shrub and rumen in vitro methane production.
Livestock Research for Rural Development. Volume 29, Article #138.
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, from http://www.lrrd.org/lrrd29/7/akam29138.html