Proximal sensors for monitoring seasonal changes of feeding sites selected by grazing ewes - Serrano, João; Sales-Baptista, E.; Shahidian, Shakib; Marques da Silva, J.; Ferraz de Oliveira, I.; Lopes de Castro, J.; Pereira, Alfredo; Cancela d?Abreu, M.; de Carvalho, Mário (2018)