| article html file updated | 9 February 2020 06:56 CET | Update | https://www.mdpi.com/2075-4701/8/2/138 |
| article html file updated | 30 September 2019 21:06 CEST | Update | - |
| article html file updated | 1 May 2019 17:48 CEST | Update | - |
| article html file updated | 17 April 2019 17:08 CEST | Update | - |
| article html file updated | 28 March 2019 23:57 CET | Update | - |
| article html file updated | 22 February 2018 11:31 CET | Original file | - |
| article xml uploaded. | 22 February 2018 11:29 CET | Update | https://www.mdpi.com/2075-4701/8/2/138/xml |
| article xml uploaded. | 22 February 2018 11:29 CET | Original file | - |
| article pdf uploaded. | 22 February 2018 11:29 CET | Updated version of record | https://www.mdpi.com/2075-4701/8/2/138/pdf |
| article pdf uploaded. | 17 February 2018 06:36 CET | Version of Record | https://www.mdpi.com/2075-4701/8/2/138/pdf-vor |
