| article html file updated | 6 February 2020 01:12 CET | Update | https://www.mdpi.com/1422-0067/14/4/6720 |
| article html file updated | 8 May 2019 06:56 CEST | Update | N/A |
| article html file updated | 20 March 2019 20:15 CET | Update | N/A |
| article html file updated | 17 June 2015 07:53 CEST | Update | N/A |
| article html file updated | 21 May 2013 09:24 CEST | Update | N/A |
| article xml file uploaded | 21 May 2013 09:24 CEST | Update | https://www.mdpi.com/1422-0067/14/4/6720/xml |
| article html file updated | 6 May 2013 17:19 CEST | Original file | N/A |
| article xml file uploaded | 6 May 2013 17:18 CEST | Original file | N/A |
| article pdf uploaded. | 26 March 2013 11:30 CET | Version of Record | https://www.mdpi.com/1422-0067/14/4/6720/pdf |
