| article html file updated | 9 February 2020 06:54 CET | Update | https://www.mdpi.com/2075-4701/8/2/137 |
| article html file updated | 30 September 2019 20:55 CEST | Update | - |
| article html file updated | 1 May 2019 17:52 CEST | Update | - |
| article html file updated | 17 April 2019 17:12 CEST | Update | - |
| article html file updated | 28 March 2019 23:53 CET | Update | - |
| article html file updated | 22 February 2018 12:55 CET | Original file | - |
| article xml uploaded. | 22 February 2018 12:54 CET | Update | https://www.mdpi.com/2075-4701/8/2/137/xml |
| article xml uploaded. | 22 February 2018 12:54 CET | Original file | - |
| article pdf uploaded. | 22 February 2018 12:54 CET | Updated version of record | https://www.mdpi.com/2075-4701/8/2/137/pdf |
| article pdf uploaded. | 16 February 2018 14:21 CET | Version of Record | https://www.mdpi.com/2075-4701/8/2/137/pdf-vor |
