%0 Journal Article %J J. Log. Program. %D 1990 %T A Transformational Approach to Negation in Logic Programming %A Roberto Barbuti %A Paolo Mancarella %A Dino Pedreschi %A Franco Turini %B J. Log. Program. %V 8 %P 201-228 %G eng %0 Conference Paper %B TAPSOFT, Vol.2 %D 1987 %T Intensional Negation of Logic Programs: Examples and Implementation Techniques %A Roberto Barbuti %A Paolo Mancarella %A Dino Pedreschi %A Franco Turini %B TAPSOFT, Vol.2 %P 96-110 %G eng