Arieli et al., 1989. Anim. Feed Sci. Technol., 23 (4): 333-341 Document reference Arieli, A. ; Werner, D., 1989. A comparison between fermentation heat of forages and organic matter digestibility determined by in vitro incubation with rumen fluid. Anim. Feed Sci. Technol., 23 (4): 333-341Web http://dx.doi.org/10.1016/0377-8401(89)90053-9Citation key Arieli et al., 1989