| article html file updated | 7 February 2020 08:38 CET | Update | https://www.mdpi.com/1999-4893/9/2/33 |
| article html file updated | 5 May 2019 15:56 CEST | Update | - |
| article html file updated | 27 March 2019 04:34 CET | Update | - |
| article html file updated | 27 June 2016 12:15 CEST | Update | - |
| article html file updated | 16 May 2016 22:58 CEST | Original file | - |
| article xml uploaded. | 13 May 2016 09:13 CEST | Original file | https://www.mdpi.com/1999-4893/9/2/33/xml |
| article pdf uploaded. | 13 May 2016 09:13 CEST | Version of Record | https://www.mdpi.com/1999-4893/9/2/33/pdf |
