| article html file updated | 9 February 2020 08:50 CET | Update | https://www.mdpi.com/2079-6374/8/1/21 |
| article html file updated | 1 October 2019 07:59 CEST | Update | N/A |
| article html file updated | 1 May 2019 13:50 CEST | Update | N/A |
| article html file updated | 17 April 2019 13:28 CEST | Update | N/A |
| article html file updated | 29 March 2019 04:24 CET | Update | N/A |
| article html file updated | 27 March 2018 14:28 CEST | Update | N/A |
| article html file updated | 6 March 2018 17:51 CET | Original file | N/A |
| article xml uploaded. | 6 March 2018 17:50 CET | Original file | https://www.mdpi.com/2079-6374/8/1/21/xml |
| article pdf uploaded. | 6 March 2018 17:50 CET | Version of Record | https://www.mdpi.com/2079-6374/8/1/21/pdf |
