| article html file updated | 8 February 2020 19:57 CET | Update | https://www.mdpi.com/2079-6374/7/4/49 |
| article html file updated | 2 May 2019 17:51 CEST | Update | N/A |
| article html file updated | 2 January 2018 12:26 CET | Update | N/A |
| article html file updated | 31 October 2017 13:32 CET | Original file | N/A |
| article xml uploaded. | 31 October 2017 13:31 CET | Update | https://www.mdpi.com/2079-6374/7/4/49/xml |
| article xml uploaded. | 31 October 2017 13:31 CET | Original file | N/A |
| article pdf uploaded. | 31 October 2017 13:31 CET | Version of Record | https://www.mdpi.com/2079-6374/7/4/49/pdf |
