Logichart: A Prolog Program Diagram and its Layout.

Yoshihiro Adachi Yudai Furusawa Logichart: A Prolog Program Diagram and its Layout. 2007 7 ECEASST http://eceasst.cs.tu-berlin.de/index.php/eceasst/article/view/95 db/journals/eceasst/eceasst7.html#AdachiF07