| article html file updated | 9 February 2020 06:39 CET | Update | https://www.mdpi.com/1999-4907/9/2/90 |
| article html file updated | 30 September 2019 19:24 CEST | Update | - |
| article html file updated | 1 May 2019 18:25 CEST | Update | - |
| article html file updated | 17 April 2019 17:43 CEST | Update | - |
| article html file updated | 28 March 2019 23:21 CET | Update | - |
| article html file updated | 14 March 2018 09:22 CET | Update | - |
| article html file updated | 19 February 2018 08:20 CET | Update | - |
| article xml uploaded. | 19 February 2018 08:19 CET | Update | https://www.mdpi.com/1999-4907/9/2/90/xml |
| article pdf uploaded. | 19 February 2018 08:19 CET | Updated version of record | https://www.mdpi.com/1999-4907/9/2/90/pdf |
| article html file updated | 14 February 2018 09:28 CET | Original file | - |
| article xml uploaded. | 14 February 2018 09:27 CET | Original file | - |
| article pdf uploaded. | 14 February 2018 09:27 CET | Version of Record | https://www.mdpi.com/1999-4907/9/2/90/pdf-vor |
