| article html file updated | 6 February 2020 19:58 CET | Update | https://www.mdpi.com/2072-6651/7/6/2321 |
| article html file updated | 20 September 2019 23:13 CEST | Update | N/A |
| article html file updated | 6 May 2019 17:11 CEST | Update | N/A |
| article html file updated | 26 March 2019 05:15 CET | Update | N/A |
| article html file updated | 21 August 2015 14:00 CEST | Update | N/A |
| article html file updated | 2 July 2015 10:15 CEST | Original file | N/A |
| article xml file uploaded | 2 July 2015 10:15 CEST | Original file | https://www.mdpi.com/2072-6651/7/6/2321/xml |
| article pdf uploaded. | 23 June 2015 14:07 CEST | Version of Record | https://www.mdpi.com/2072-6651/7/6/2321/pdf |
