| article html file updated | 8 February 2020 15:21 CET | Update | https://www.mdpi.com/2077-0375/7/3/51 |
| article html file updated | 26 September 2019 22:56 CEST | Update | - |
| article html file updated | 3 May 2019 03:32 CEST | Update | - |
| article html file updated | 30 September 2017 11:31 CEST | Update | - |
| article html file updated | 5 September 2017 11:23 CEST | Original file | - |
| article xml uploaded. | 5 September 2017 11:22 CEST | Original file | https://www.mdpi.com/2077-0375/7/3/51/xml |
| article pdf uploaded. | 5 September 2017 11:22 CEST | Version of Record | https://www.mdpi.com/2077-0375/7/3/51/pdf |
