| article html file updated | 9 February 2020 01:57 CET | Update | https://www.mdpi.com/2079-9292/7/1/4 |
| article html file updated | 29 September 2019 15:59 CEST | Update | - |
| article html file updated | 2 May 2019 04:32 CEST | Update | - |
| article html file updated | 18 April 2019 02:36 CEST | Update | - |
| article html file updated | 28 March 2019 12:59 CET | Update | - |
| article html file updated | 1 February 2018 15:05 CET | Update | - |
| article html file updated | 4 January 2018 06:54 CET | Original file | - |
| article xml uploaded. | 4 January 2018 06:52 CET | Update | https://www.mdpi.com/2079-9292/7/1/4/xml |
| article pdf uploaded. | 4 January 2018 06:52 CET | Version of Record | https://www.mdpi.com/2079-9292/7/1/4/pdf |
