Pereira, L. G. R., Maurício, R. M., Gonçalves, L. C., Tomich, T. R., Rodrigues, J. A. S., & Rodriguez, N. M. (2005). Evaluation of silages from hybrid m734 of sunflower obteined in diferent cutting times using the semi-automated "in vitro" gas production technique. Brazilian Journal of Veterinary Research and Animal Science, 42(4), 276-283.