The Aspell Bulgarian dictionary is based on the MySpell One:

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COPYRIGHT
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  OOo-spell-bg
    (C) 2001   <radnev@yahoo.com>

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COPYING.BULGARIAN,     .


  OOo-spell-bg
  Copyright (C) 2001 Radostin Radnev <radnev@yahoo.com>

  This program comes with ABSOLUTELY NO WARRANTY. This is free
software, and you are welcome to redistribute it under certain
conditions. For details read file COPYING that comes with this
package.

Original MySpell README file and affix file can be found in the doc/
directory.
