| article html file updated | 7 February 2020 06:31 CET | Update | https://www.mdpi.com/2073-4352/6/4/33 |
| article html file updated | 5 May 2019 20:12 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:30 CET | Update | N/A |
| article html file updated | 27 April 2016 10:59 CEST | Update | N/A |
| article html file updated | 28 March 2016 11:50 CEST | Original file | N/A |
| article xml uploaded. | 28 March 2016 11:48 CEST | Update | https://www.mdpi.com/2073-4352/6/4/33/xml |
| article pdf uploaded. | 28 March 2016 11:48 CEST | Version of Record | https://www.mdpi.com/2073-4352/6/4/33/pdf |
