| article html file updated | 9 February 2020 05:06 CET | Update | https://www.mdpi.com/2073-4352/8/2/73 |
| article html file updated | 30 September 2019 09:58 CEST | Update | N/A |
| article html file updated | 1 May 2019 21:56 CEST | Update | N/A |
| article html file updated | 17 April 2019 20:43 CEST | Update | N/A |
| article html file updated | 28 March 2019 20:00 CET | Update | N/A |
| article html file updated | 14 March 2018 09:03 CET | Update | N/A |
| article html file updated | 1 February 2018 03:11 CET | Original file | N/A |
| article xml uploaded. | 1 February 2018 03:09 CET | Original file | https://www.mdpi.com/2073-4352/8/2/73/xml |
| article pdf uploaded. | 1 February 2018 03:09 CET | Version of Record | https://www.mdpi.com/2073-4352/8/2/73/pdf |
