| article html file updated | 7 February 2020 10:33 CET | Update | https://www.mdpi.com/1999-4893/9/2/42 |
| article html file updated | 5 May 2019 12:12 CEST | Update | N/A |
| article html file updated | 27 March 2019 08:10 CET | Update | N/A |
| article html file updated | 27 June 2016 12:19 CEST | Update | N/A |
| article html file updated | 22 June 2016 09:39 CEST | Original file | N/A |
| article xml uploaded. | 22 June 2016 09:38 CEST | Original file | https://www.mdpi.com/1999-4893/9/2/42/xml |
| article pdf uploaded. | 22 June 2016 09:38 CEST | Version of Record | https://www.mdpi.com/1999-4893/9/2/42/pdf |
