| article html file updated | 9 February 2020 11:21 CET | Update | https://www.mdpi.com/2073-431X/7/2/20 |
| article html file updated | 1 October 2019 23:57 CEST | Update | - |
| article html file updated | 1 May 2019 08:32 CEST | Update | - |
| article html file updated | 17 April 2019 08:27 CEST | Update | - |
| article html file updated | 29 March 2019 10:01 CET | Update | - |
| article html file updated | 27 June 2018 19:19 CEST | Update | - |
| article html file updated | 27 March 2018 07:09 CEST | Original file | - |
| article xml uploaded. | 27 March 2018 07:08 CEST | Update | https://www.mdpi.com/2073-431X/7/2/20/xml |
| article pdf uploaded. | 27 March 2018 07:08 CEST | Updated version of record | https://www.mdpi.com/2073-431X/7/2/20/pdf |
| article pdf uploaded. | 26 March 2018 17:13 CEST | Version of Record | https://www.mdpi.com/2073-431X/7/2/20/pdf-vor |
