Jaargang 2 nummer 2 - 23 september 2011
http://www.prolific.nl/pronewsletter/prolific/2011/002/prolific_web.htm
http://www.prolific.nl/pronewsletter/prolific/2011/002/prolific_web.htm
Jaargang 2 nummer 1 - 1 juni 2011
http://www.prolific.nl/pronewsletter/prolific/2011/001/prolific_web.htm
http://www.prolific.nl/pronewsletter/prolific/2011/001/prolific_web.htm