| article html file updated | 7 February 2020 07:08 CET | Update | https://www.mdpi.com/1996-1944/9/4/281 |
| article html file updated | 5 May 2019 18:54 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:38 CET | Update | N/A |
| article html file updated | 28 April 2016 11:04 CEST | Update | N/A |
| article html file updated | 12 April 2016 10:53 CEST | Original file | N/A |
| article xml uploaded. | 12 April 2016 10:51 CEST | Update | https://www.mdpi.com/1996-1944/9/4/281/xml |
| article pdf uploaded. | 12 April 2016 10:51 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/4/281/pdf |
