Algorithmic efficiency Branch table Control table Duff's device Index mapping References Further reading Stephen Kleene, 1952 (10th reprint 1991), Introduction to Metamathematics, North-Holland Publishing Company, Amsterdam NL, George Boolos, John Burgess, and Richard Jeffrey, 2002, Computability and Logic: Fourth Edition, Cambridge University Press, Cambridge UK, paperback. cf page 74-75. Conditional constructs ru:Оператор ветвления#Переключатель (оператор множественного выбора)