| article html file updated | 7 February 2020 07:34 CET | Update | https://www.mdpi.com/1996-1944/9/4/299 |
| article html file updated | 5 May 2019 18:02 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:29 CET | Update | N/A |
| article html file updated | 28 April 2016 11:13 CEST | Update | N/A |
| article html file updated | 20 April 2016 14:53 CEST | Original file | N/A |
| article xml uploaded. | 20 April 2016 14:52 CEST | Original file | https://www.mdpi.com/1996-1944/9/4/299/xml |
| article pdf uploaded. | 20 April 2016 14:52 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/4/299/pdf |
