| article html file updated | 9 February 2020 04:11 CET | Update | https://www.mdpi.com/2073-4352/8/2/56 |
| article html file updated | 30 September 2019 04:32 CEST | Update | N/A |
| article html file updated | 1 May 2019 23:52 CEST | Update | N/A |
| article html file updated | 17 April 2019 22:25 CEST | Update | N/A |
| article html file updated | 28 March 2019 18:02 CET | Update | N/A |
| article html file updated | 14 March 2018 09:00 CET | Update | N/A |
| article html file updated | 24 January 2018 16:42 CET | Original file | N/A |
| article xml uploaded. | 24 January 2018 16:41 CET | Original file | https://www.mdpi.com/2073-4352/8/2/56/xml |
| article pdf uploaded. | 24 January 2018 16:41 CET | Version of Record | https://www.mdpi.com/2073-4352/8/2/56/pdf |
