| article html file updated | 7 February 2020 19:17 CET | Update | https://www.mdpi.com/2312-7481/2/4/43 |
| article html file updated | 22 September 2019 09:39 CEST | Update | N/A |
| article html file updated | 4 May 2019 19:55 CEST | Update | N/A |
| article html file updated | 28 December 2016 11:31 CET | Update | N/A |
| article html file updated | 8 December 2016 12:57 CET | Original file | N/A |
| article xml uploaded. | 8 December 2016 12:56 CET | Original file | https://www.mdpi.com/2312-7481/2/4/43/xml |
| article pdf uploaded. | 8 December 2016 12:56 CET | Version of Record | https://www.mdpi.com/2312-7481/2/4/43/pdf |
