

ncal/cal:   
    Wolfgang Helbig 1997

libical:

    John Gray <gray@agora-net.com>
    Andrea Campi <a.campi@inet.it>

    Original author May 1998-December 2001, Eric Busboom  <eric@softwarestudio.org>


calcalendar:  
    Julin Simn de Castro <simon@losInvisibles.net>

