1. Computing machinery and intelligence;Turing;Source Mind, New Ser,1950
2. The hierarchical organization of nervous mechanisms underlying instinctive behaviour;Tinbergen;Symp Soc Exp Biol,1950
3. The study of instinct;Tinbergen,1951
4. The problem of serial order in behavior;Lashley,1951
5. The comparative method in studying innate behaviour patterns;Lorenz;Symp Soc Exp Biol,1950