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

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Text this: On kirchhoff's model of parabolic type