| article html file updated | 8 February 2020 07:41 CET | Update | https://www.mdpi.com/2079-6412/7/6/77 |
| article html file updated | 25 September 2019 05:18 CEST | Update | N/A |
| article html file updated | 3 May 2019 18:36 CEST | Update | N/A |
| article html file updated | 27 June 2017 10:03 CEST | Update | N/A |
| article html file updated | 7 June 2017 12:10 CEST | Original file | N/A |
| article xml uploaded. | 7 June 2017 12:08 CEST | Update | https://www.mdpi.com/2079-6412/7/6/77/xml |
| article pdf uploaded. | 7 June 2017 12:08 CEST | Version of Record | https://www.mdpi.com/2079-6412/7/6/77/pdf |
