| article html file updated | 6 February 2020 18:28 CET | Update | https://www.mdpi.com/1999-4893/8/2/209 |
| article html file updated | 6 May 2019 20:23 CEST | Update | N/A |
| article html file updated | 26 March 2019 02:14 CET | Update | N/A |
| article html file updated | 21 August 2015 11:50 CEST | Update | N/A |
| article html file updated | 15 July 2015 09:22 CEST | Original file | N/A |
| article xml file uploaded | 15 July 2015 09:22 CEST | Original file | https://www.mdpi.com/1999-4893/8/2/209/xml |
| article pdf uploaded. | 8 May 2015 14:00 CEST | Version of Record | https://www.mdpi.com/1999-4893/8/2/209/pdf |
