| article html file updated | 9 February 2020 06:59 CET | Update | https://www.mdpi.com/2077-0383/7/2/33 |
| article html file updated | 30 September 2019 21:23 CEST | Update | - |
| article html file updated | 1 May 2019 17:41 CEST | Update | - |
| article html file updated | 17 April 2019 17:02 CEST | Update | - |
| article html file updated | 29 March 2019 00:04 CET | Update | - |
| article html file updated | 14 March 2018 17:00 CET | Update | - |
| article html file updated | 21 February 2018 13:25 CET | Original file | - |
| article xml uploaded. | 21 February 2018 13:24 CET | Original file | https://www.mdpi.com/2077-0383/7/2/33/xml |
| article pdf uploaded. | 21 February 2018 13:24 CET | Updated version of record | https://www.mdpi.com/2077-0383/7/2/33/pdf |
| article pdf uploaded. | 19 February 2018 07:40 CET | Updated version of record | https://www.mdpi.com/2077-0383/7/2/33/pdf-vor |
| article pdf uploaded. | 17 February 2018 14:59 CET | Version of Record | https://www.mdpi.com/2077-0383/7/2/33/pdf-vor |
