| article html file updated | 8 February 2020 23:22 CET | Update | https://www.mdpi.com/2218-2004/5/4/50 |
| article html file updated | 29 September 2019 01:05 CEST | Update | N/A |
| article html file updated | 2 May 2019 10:09 CEST | Update | N/A |
| article html file updated | 18 April 2019 07:48 CEST | Update | N/A |
| article html file updated | 2 January 2018 13:22 CET | Update | N/A |
| article html file updated | 6 December 2017 16:32 CET | Update | N/A |
| article html file updated | 6 December 2017 16:31 CET | Original file | N/A |
| article xml uploaded. | 6 December 2017 16:31 CET | Update | https://www.mdpi.com/2218-2004/5/4/50/xml |
| article pdf uploaded. | 6 December 2017 16:31 CET | Updated version of record | https://www.mdpi.com/2218-2004/5/4/50/pdf |
| article xml uploaded. | 6 December 2017 16:30 CET | Original file | N/A |
| article pdf uploaded. | 6 December 2017 16:30 CET | Version of Record | https://www.mdpi.com/2218-2004/5/4/50/pdf-vor |
