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+\myprogram{{compute\_rho.py}}
+          {compute the Spearman's rank correlation coefficient $\rho$
+          between two rankings.}  {$<$file1$>$ $<$file2$>$}
+
+\mydescription{Compute the Spearman's rank correlation coefficient
+           $\rho$ between two rankings provided in the input
+          files \textit{file1} and \textit{file2}. Each input file
+          contains a list of lines, where the n-th line contains the
+          value of rank of the n-th node. For instance, \textit{file1}
+          and \textit{file2} might contain the ranks of nodes induced
+          by the degree sequences of two distinct layers of a
+          multiplex. 
+
+          However, the program is pretty general and can be used to
+          compute the Spearman's rank correlation coefficient between
+          any generic pair of rankings.
+
+          N.B.: A C implementation of this program, with the same
+          interface is also available in the executable
+          file \texttt{compute\_rho}.}
+
+
+\myreturn{The program prints on \texttt{stdout} the value of the
+          Spearman's rank correlation coefficient $\rho$ between the
+          two rankings provided as input. }
+
+\myreference{\refcorrelations
+
+  \refgrowth
+
+  \refnonlinear
+  }