| article html file updated | 6 February 2020 15:45 CET | Update | https://www.mdpi.com/2072-4292/7/2/1721 |
| article html file updated | 7 May 2019 01:23 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:25 CET | Update | N/A |
| article html file updated | 21 August 2015 07:11 CEST | Update | N/A |
| article html file updated | 17 March 2015 12:02 CET | Original file | N/A |
| article xml file uploaded | 17 March 2015 12:02 CET | Original file | https://www.mdpi.com/2072-4292/7/2/1721/xml |
| article pdf uploaded. | 5 February 2015 12:56 CET | Version of Record | https://www.mdpi.com/2072-4292/7/2/1721/pdf |
