1. Aviary systems and conventional cages for laying hens. Effects on production, egg quality, health and birds' location in three hybrids;Abrahamsson;Acta Agric. Scand.,1995
2. Effects of group size on performance, health and birds' use of facilities in furnished cages for laying hens;Abrahamsson;Acta Agric. Scand.,1997
3. Performance of four hybrids of laying hens in modified and conventional cages;Abrahamsson;Acta Agric. Scand.,1995
4. Effect on production, health and egg quality of varying proportions of wheat and barley in diets for two hybrids of laying hens kept in different housing systems;Abrahamsson;Acta Agric. Scand.,1996
5. Should cages for laying hens be banned or modified?;Appleby;Anim. Welf.,1993