1. Early breeding of dairy heifers;Amir;An. Prod.,1967
2. Early breeding of heifers in relation to subsequent performance;Amir,1971
3. Beef production with maiden and once-calved heifers;Boucqué;Livest. Prod. Sci.,1980
4. The use of cow-heifers in beef production;Brookes;J. R. Agric. Soc. Engl.,1965
5. The use of bred heifers for meat production;Čepin;Rudovi Poljoprivednag Fakulteta Univerziteta u Sarajuvu,1976