Authors: Olsson, IAS Keeling, LJ

Citation: Ias. Olsson et Lj. Keeling, Night-time roosting in laying hens and the effect of thwarting access to perches, APPL ANIM B, 68(3), 2000, pp. 243-256

Authors: Olsson, IAS de Jonge, FH Schuurman, T Helmond, FA

Citation: Ias. Olsson et al., Poor rearing conditions and social stress in pigs: repeated social challenge and the effect on behavioural and physiological responses to stressors, BEHAV PROC, 46(3), 1999, pp. 201-215