Cats2D Multiphysics > Developments > Copyright

Cats2D copyright over the years

Cats2D software is the unpublished joint work of Andrew Yeckel and Ralph T. Goodwin. Copyright infringement will not be tolerated. Copyright notice has been maintained since 1994 in the source code files and the startup screen. Copyright notice is also given in the Cats2D user manual since it first appeared in 2003, and in the original Charisma user manual from 1994. Copyright has been registered since March, 2017.

Here is copyright notice in the startup screen as it looks today:

Cats2D 8.06.06 (Crystallization and Transport Simulator)
Unpublished © 1992-2018 Andrew Yeckel and Ralph T. Goodwin, all rights reserved

and in the source code files:

/*
* Cats2D 8.06.06 (Crystallization and Transport Simulator)
* Unpublished © 1992-2018 Ralph T. Goodwin and Andrew Yeckel, all rights reserved
*/

Here is copyright notice in the startup screen in 1994, when the code was named Charisma:

Charisma 0.01
Unpublished work Copyright 1994 Ralph T. Goodwin and Andrew Yeckel

and in the source code files

/*
* Charisma 0.01
* Unpublished work Copyright 1994 Ralph T. Goodwin and Andrew Yeckel
*/

Over forty published works and eight PhD dissertations cite Cats2D in this form or similar:

A. Yeckel and R.T. Goodwin. (2003) Cats2D (Crystallization and Transport Simulator), 
User Manual. Unpublished (available at http://www.msi.umn.edu/~yeckel/cats2d.html)

Cats2D must always be attributed to Yeckel and Goodwin, or Goodwin and Yeckel, and no one else.