| article html file updated | 8 February 2020 17:55 CET | Update | https://www.mdpi.com/2077-0375/7/4/59 |
| article html file updated | 27 September 2019 14:20 CEST | Update | - |
| article html file updated | 2 May 2019 22:28 CEST | Update | - |
| article html file updated | 2 January 2018 20:21 CET | Update | - |
| article html file updated | 16 October 2017 08:43 CEST | Update | - |
| article xml uploaded. | 16 October 2017 08:42 CEST | Update | https://www.mdpi.com/2077-0375/7/4/59/xml |
| article pdf uploaded. | 16 October 2017 08:42 CEST | Updated version of record | https://www.mdpi.com/2077-0375/7/4/59/pdf |
| article html file updated | 12 October 2017 09:04 CEST | Original file | - |
| article xml uploaded. | 12 October 2017 09:03 CEST | Original file | - |
| article pdf uploaded. | 12 October 2017 09:03 CEST | Updated version of record | https://www.mdpi.com/2077-0375/7/4/59/pdf-vor |
| article pdf uploaded. | 7 October 2017 11:18 CEST | Version of Record | https://www.mdpi.com/2077-0375/7/4/59/pdf-vor |
