| article html file updated | 7 February 2020 10:16 CET | Update | https://www.mdpi.com/2077-1444/7/6/77 |
| article html file updated | 5 May 2019 12:46 CEST | Update | N/A |
| article html file updated | 27 March 2019 07:39 CET | Update | N/A |
| article html file updated | 29 June 2016 11:35 CEST | Update | N/A |
| article html file updated | 16 June 2016 10:00 CEST | Original file | N/A |
| article xml uploaded. | 16 June 2016 09:59 CEST | Original file | https://www.mdpi.com/2077-1444/7/6/77/xml |
| article pdf uploaded. | 16 June 2016 09:59 CEST | Version of Record | https://www.mdpi.com/2077-1444/7/6/77/pdf |
