| article html file updated | 8 February 2020 07:11 CET | Update | https://www.mdpi.com/2079-6412/7/6/73 |
| article html file updated | 25 September 2019 02:48 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:31 CEST | Update | N/A |
| article html file updated | 27 June 2017 10:02 CEST | Update | N/A |
| article html file updated | 23 June 2017 05:10 CEST | Original file | N/A |
| article xml uploaded. | 23 June 2017 05:09 CEST | Update | https://www.mdpi.com/2079-6412/7/6/73/xml |
| article pdf uploaded. | 1 June 2017 12:49 CEST | Version of Record | https://www.mdpi.com/2079-6412/7/6/73/pdf |
