ELECTRONIC	h   t   t   p   c o l o n   s l a s h   s l a s h   q   m e t h o d dot o r g   s l a s h   a r t i c l e s   s l a s h   v a n e x e l dot p d f b u c k l e y	http://qmethod.org/articles/vanexel.pdfbuckley	1