| article html file updated | 7 February 2020 19:08 CET | Update | https://www.mdpi.com/2073-4360/8/12/421 |
| article html file updated | 22 September 2019 08:59 CEST | Update | N/A |
| article html file updated | 4 May 2019 20:15 CEST | Update | N/A |
| article html file updated | 15 March 2019 10:31 CET | Update | N/A |
| article html file updated | 28 December 2016 07:58 CET | Update | N/A |
| article html file updated | 6 December 2016 08:40 CET | Original file | N/A |
| article xml uploaded. | 6 December 2016 08:39 CET | Original file | https://www.mdpi.com/2073-4360/8/12/421/xml |
| article pdf uploaded. | 6 December 2016 08:39 CET | Version of Record | https://www.mdpi.com/2073-4360/8/12/421/pdf |
