| article html file updated | 7 February 2020 23:29 CET | Update | https://www.mdpi.com/2073-4433/8/2/39 |
| article html file updated | 23 September 2019 08:29 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:04 CEST | Update | N/A |
| article html file updated | 28 February 2017 11:05 CET | Update | N/A |
| article html file updated | 15 February 2017 14:27 CET | Original file | N/A |
| article xml uploaded. | 15 February 2017 14:26 CET | Update | https://www.mdpi.com/2073-4433/8/2/39/xml |
| article xml uploaded. | 15 February 2017 14:25 CET | Original file | N/A |
| article pdf uploaded. | 15 February 2017 14:25 CET | Version of Record | https://www.mdpi.com/2073-4433/8/2/39/pdf |
