| article html file updated | 8 February 2020 23:00 CET | Update | https://www.mdpi.com/2079-6412/7/12/220 |
| article html file updated | 28 September 2019 23:05 CEST | Update | N/A |
| article html file updated | 2 May 2019 10:55 CEST | Update | N/A |
| article html file updated | 18 April 2019 08:32 CEST | Update | N/A |
| article html file updated | 2 January 2018 10:15 CET | Update | N/A |
| article html file updated | 4 December 2017 11:59 CET | Original file | N/A |
| article xml uploaded. | 4 December 2017 11:58 CET | Original file | https://www.mdpi.com/2079-6412/7/12/220/xml |
| article pdf uploaded. | 4 December 2017 11:58 CET | Version of Record | https://www.mdpi.com/2079-6412/7/12/220/pdf |
