http://ebooks.computerworks.eu/vectorworks/updateprospekt/2013
http://ebooks.computerworks.eu/vectorworks/updateprospekt/2014
http://ebooks.computerworks.eu/vectorworks/updateprospekt/2015
http://ebooks.computerworks.eu/vectorworks/updateprospekt/2016
http://ebooks.computerworks.eu/vectorworks/updateprospekt/2017