Text this: ALTERNATING DIRECTION IMPLICIT FINITE DIFFERENCE SCHEMES FOR THE HESTON PARTIAL DIFFERENTIAL EQUATION

  _____    __   __    _  _     _____    _    _   
 |__  //   \ \\/ //  | \| ||  |  ___|| | |  | || 
   / //     \ ` //   |  ' ||  | ||__   | |/\| || 
  / //__     | ||    | .  ||  | ||__   |  /\  || 
 /_____||    |_||    |_|\_||  |_____|| |_// \_|| 
 `-----`     `-`'    `-` -`   `-----`  `-`   `-`