| article html file updated | 7 February 2020 14:10 CET | Update | https://www.mdpi.com/2077-0472/6/3/43 |
| article html file updated | 5 May 2019 05:35 CEST | Update | - |
| article html file updated | 27 March 2019 15:26 CET | Update | - |
| article html file updated | 29 September 2016 08:26 CEST | Update | - |
| article html file updated | 31 August 2016 10:09 CEST | Original file | - |
| article xml uploaded. | 31 August 2016 10:08 CEST | Original file | https://www.mdpi.com/2077-0472/6/3/43/xml |
| article pdf uploaded. | 31 August 2016 10:08 CEST | Version of Record | https://www.mdpi.com/2077-0472/6/3/43/pdf |
