 Usage:  (m2)=fracbrown(p,nu,alpha)  
 
 Input:

  p                      scalar, temporal scale factor 
                         
  nu                     scalar, the resulting matrix is a (2*p*nu+1) matrix 
                         
  alpha                  scalar, coefficent of the frac. brownian motion 
                         
 Output:

  m2                     (2*p*nu+1)x(2*p*nu+1) matrix 
                         
--------------------------------------------------------------
(C) MD*TECH Method and Data Technologies, 17.8.2000
