| article html file updated | 8 February 2020 03:04 CET | Update | https://www.mdpi.com/2077-0375/7/2/22 |
| article html file updated | 24 September 2019 04:58 CEST | Update | - |
| article html file updated | 4 May 2019 03:13 CEST | Update | - |
| article html file updated | 29 June 2017 11:40 CEST | Update | - |
| article html file updated | 21 April 2017 09:40 CEST | Update | - |
| article xml uploaded. | 21 April 2017 09:39 CEST | Update | https://www.mdpi.com/2077-0375/7/2/22/xml |
| article pdf uploaded. | 21 April 2017 09:39 CEST | Updated version of record | https://www.mdpi.com/2077-0375/7/2/22/pdf |
| article html file updated | 7 April 2017 13:22 CEST | Original file | - |
| article pdf uploaded. | 7 April 2017 13:20 CEST | Version of Record | https://www.mdpi.com/2077-0375/7/2/22/pdf-vor |
