| article html file updated | 8 February 2020 22:43 CET | Update | https://www.mdpi.com/2075-1729/7/4/51 |
| article html file updated | 28 September 2019 21:10 CEST | Update | - |
| article html file updated | 2 May 2019 11:36 CEST | Update | - |
| article html file updated | 18 April 2019 09:13 CEST | Update | - |
| article html file updated | 3 January 2018 09:27 CET | Update | - |
| article html file updated | 4 December 2017 08:39 CET | Update | - |
| article xml uploaded. | 4 December 2017 08:37 CET | Update | https://www.mdpi.com/2075-1729/7/4/51/xml |
| article pdf uploaded. | 4 December 2017 08:37 CET | Updated version of record | https://www.mdpi.com/2075-1729/7/4/51/pdf |
| article html file updated | 30 November 2017 17:29 CET | Original file | - |
| article xml uploaded. | 30 November 2017 16:59 CET | Original file | - |
| article pdf uploaded. | 30 November 2017 16:59 CET | Version of Record | https://www.mdpi.com/2075-1729/7/4/51/pdf-vor |
