E-mail address needed

[Hemant Varma]

i

Hello,
       I was wondering if anybody knows an e-mail address
 of the following authors in Brazil:

A.C. Gaudio and Y. Takahata 

of the following paper:

 Calculation of molecular surface area with numerical factors

 Computers & Chemistry Vol. 16, No.4, 277-284

I am basically looking for the program that they wrote to
compute the accessible surface areas. Any help would be
appreciated. Critiques on their method are welcome as well!

Thanks,

Hemant