| article html file updated | 9 February 2020 01:15 CET | Update | https://www.mdpi.com/2079-7737/7/1/2 |
| article html file updated | 29 September 2019 11:58 CEST | Update | N/A |
| article html file updated | 2 May 2019 06:01 CEST | Update | N/A |
| article html file updated | 18 April 2019 04:00 CEST | Update | N/A |
| article html file updated | 28 March 2019 11:18 CET | Update | N/A |
| article html file updated | 27 March 2018 14:24 CEST | Update | N/A |
| article html file updated | 26 December 2017 11:02 CET | Original file | N/A |
| article xml uploaded. | 26 December 2017 11:00 CET | Original file | https://www.mdpi.com/2079-7737/7/1/2/xml |
| article pdf uploaded. | 26 December 2017 11:00 CET | Version of Record | https://www.mdpi.com/2079-7737/7/1/2/pdf |
