| article html file updated | 6 February 2020 05:16 CET | Update | https://www.mdpi.com/1422-0067/14/11/21660 |
| article html file updated | 7 May 2019 22:39 CEST | Update | N/A |
| article html file updated | 21 March 2019 06:56 CET | Update | N/A |
| article html file updated | 9 December 2013 08:39 CET | Original file | N/A |
| article xml file uploaded | 9 December 2013 08:39 CET | Original file | https://www.mdpi.com/1422-0067/14/11/21660/xml |
| article pdf uploaded. | 31 October 2013 11:32 CET | Version of Record | https://www.mdpi.com/1422-0067/14/11/21660/pdf |
