by Garrett, B, Osterballe, R, Slomianka, L, Geneser, F A
Published in Brain, behavior and evolution (1994)

by Madsen, A, Oesterballe, R, Mortensen, H.P
Published in Meddelelse. Statens Husdyrbrugsforsoeg (Denmark) (01.02.1991)

by Madsen A, Oesterballe R, Mortensen H.P
Published in Meddelelse. Statens Husdyrbrugsforsoeg (Denmark). no. 789 (1991)

by Oesterballe, R, Madsen, A, Mortensen, H.P, Bejerholm, C, Barton, P
Published in Beretning. Statens Husdyrbrugsforsoeg (Denmark) (1990)

by Madsen, A, Oesterballe, R, Mortensen, H.P, Bejerholm, C, Barton, P
Published in Beretning fra Statens Husdyrbrugsforsoeg (Denmark) (1990)