| article html file updated | 9 February 2020 04:31 CET | Update | https://www.mdpi.com/2073-4352/8/2/60 |
| article html file updated | 30 September 2019 06:30 CEST | Update | N/A |
| article html file updated | 1 May 2019 23:12 CEST | Update | N/A |
| article html file updated | 17 April 2019 21:49 CEST | Update | N/A |
| article html file updated | 28 March 2019 18:43 CET | Update | N/A |
| article html file updated | 14 March 2018 09:00 CET | Update | N/A |
| article html file updated | 26 January 2018 15:56 CET | Original file | N/A |
| article xml uploaded. | 26 January 2018 15:55 CET | Update | https://www.mdpi.com/2073-4352/8/2/60/xml |
| article xml uploaded. | 26 January 2018 15:55 CET | Original file | N/A |
| article pdf uploaded. | 26 January 2018 15:55 CET | Version of Record | https://www.mdpi.com/2073-4352/8/2/60/pdf |
