Scilab Function
Last update : 5/9/2006

ba - create one normal BA scale-free network model

### Calling Sequence

  `[a,b] = ba(M0,M,T)`

### Parameters

- `M0` : integer
- `M` : integer
- `T` : integer
- `a` : row vector of the numbers of the tail nodes of the graph (its size is the number of edges of the graph)
- `b` : row vector of the numbers of the head nodes of the graph (its size is the number of edges of the graph)

### Description

  ba creates one normal BA scale-free network with exponent r=3. M0 is the initial nodes which compose an original complete graph. M is the number of link added into the graph every time step (M \leq M0), T is the total evolutional time step. Note the network size is M0+T here.

### Examples

    	[a b]=ba(6,4,9994);
    	g=make_graph('ba',0,10000,a,b);

### See Also

`er` , `ws` , `bbv` , `sba` ,

### Authors

  Wubo