| article html file updated | 7 February 2020 16:18 CET | Update | https://www.mdpi.com/2079-6374/6/4/53 |
| article html file updated | 22 September 2019 02:47 CEST | Update | - |
| article html file updated | 5 May 2019 01:44 CEST | Update | - |
| article html file updated | 28 December 2016 10:55 CET | Update | - |
| article html file updated | 13 October 2016 13:53 CEST | Original file | - |
| article xml uploaded. | 13 October 2016 13:52 CEST | Update | https://www.mdpi.com/2079-6374/6/4/53/xml |
| article xml uploaded. | 13 October 2016 13:52 CEST | Original file | - |
| article pdf uploaded. | 13 October 2016 13:52 CEST | Version of Record | https://www.mdpi.com/2079-6374/6/4/53/pdf |
