| article html file updated | 8 February 2020 22:01 CET | Update | https://www.mdpi.com/2079-7737/6/4/40 |
| article html file updated | 28 September 2019 16:52 CEST | Update | N/A |
| article html file updated | 2 May 2019 13:08 CEST | Update | N/A |
| article html file updated | 18 April 2019 10:47 CEST | Update | N/A |
| article html file updated | 7 September 2018 03:02 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:31 CET | Update | N/A |
| article html file updated | 20 December 2017 10:51 CET | Update | N/A |
| article xml uploaded. | 20 December 2017 10:50 CET | Update | https://www.mdpi.com/2079-7737/6/4/40/xml |
| article xml uploaded. | 20 December 2017 10:50 CET | Update | N/A |
| article pdf uploaded. | 20 December 2017 10:50 CET | Updated version of record | https://www.mdpi.com/2079-7737/6/4/40/pdf |
| article html file updated | 23 November 2017 14:38 CET | Original file | N/A |
| article xml uploaded. | 23 November 2017 14:37 CET | Update | N/A |
| article xml uploaded. | 23 November 2017 14:37 CET | Original file | N/A |
| article pdf uploaded. | 23 November 2017 14:37 CET | Version of Record | https://www.mdpi.com/2079-7737/6/4/40/pdf-vor |
