--- manual/s_algorithm/text/shap.tex	2001/10/25 18:36:53	1.3
+++ manual/s_algorithm/text/shap.tex	2005/08/08 17:57:06	1.5
@@ -1,9 +1,10 @@
-% $Header: /home/ubuntu/mnt/e9_copy/manual/s_algorithm/text/shap.tex,v 1.3 2001/10/25 18:36:53 cnh Exp $
+% $Header: /home/ubuntu/mnt/e9_copy/manual/s_algorithm/text/shap.tex,v 1.5 2005/08/08 17:57:06 jmc Exp $
 % $Name:  $
 
 \section{Shapiro Filter} 
+\label{sect:shapiro-filter}
 
-The Shapiro filter (Shapiro 1970, 1975) is a high order horizontal 
+The Shapiro filter \cite{Shapiro_70} is a high order horizontal 
 filter that efficiently remove small scale grid noise 
 without affecting the physical structures of a field. 
 It is applied at the end of the time step %(the\_correction\_step),
@@ -21,7 +22,7 @@
 using pure numerical differences and ignoring 
 grid spacing. 
 This later form is stable whatever the grid is, and therefore
-specially useful for highly anisotropic grid such as spherical 
+specially useful for highly anisotropic grid such as spherical 
 coordinate grid.
 A damping time-scale parameter $\tau_{shap}$ 
 defines the strength of the filter damping.
