26 May 2020
Improved the article, repaired damaged links, deleted a dead link, added new links and references. I asked for review before deleting the template message and received no arguments against. So I finally deleted the template message. If there are some arguments against, I ask for discussion.
22 May 2020
21 May 2020
Added a brief compare to other systems especially to the MPD-Thruster. I also ask for a review to remove the Template Message (please note also my last entry in the articel's Talk).
13 May 2020
Added link to articel in "Acta Astroautica" for reference; deleted link to Expert Opinion because of permission issue.m
30 April 2020
Dead Link deleted because Page does not exist anymore. New Link to IAC 2010 added. Weblink to Expert Opinion added. Notice of publication in German journal added.m
26 April 2020
Some details and an external link improvedm
some details corrected and a dead link repaired.m
The article is so far incomplete and partly misleading. So the original inventor and the history behind was not noted at all. Some documents and pictures are prepared for further update.
5 February 2018
12 January 2018
14 October 2016
12 October 2016
27 June 2016
27 March 2013
16 March 2013
14 August 2012
More caps fixesm
Move external link to external liks section, as it doesn't support anything in its sentence. Fix Nobel Prize link. Caps