1. Effect of group size on performance, health and birds’ use of facilities in furnished cages for laying hens;Abrahamsson;Acta Agric. Scan. A Anim. Sci.,1993
2. Effect of perches at different positions in conventional cages for laying hens of 2 different strains;Abrahamsson;Acta Agric. Scan. A Anim. Sci.,1993
3. Behaviour, health and integument of four hybrids of laying hens in modified and conventional cages;Abrahamsson;Br. Poult. Sci.,1996
4. Should cages for laying hens be banned or modified?;Appleby;Anim. Welf.,1993
5. Development of perching;Appleby;Biol. Behav.,1989