| article html file updated | 9 February 2020 07:06 CET | Update | https://www.mdpi.com/2077-0383/7/2/34 |
| article html file updated | 30 September 2019 22:02 CEST | Update | - |
| article html file updated | 1 May 2019 17:26 CEST | Update | - |
| article html file updated | 17 April 2019 16:48 CEST | Update | - |
| article html file updated | 29 March 2019 00:19 CET | Update | - |
| article html file updated | 14 March 2018 17:00 CET | Update | - |
| article html file updated | 22 February 2018 07:47 CET | Original file | - |
| article xml uploaded. | 22 February 2018 07:46 CET | Original file | https://www.mdpi.com/2077-0383/7/2/34/xml |
| article pdf uploaded. | 22 February 2018 07:46 CET | Updated version of record | https://www.mdpi.com/2077-0383/7/2/34/pdf |
| article pdf uploaded. | 20 February 2018 09:30 CET | Version of Record | https://www.mdpi.com/2077-0383/7/2/34/pdf-vor |
