| article html file updated | 7 February 2020 06:19 CET | Update | https://www.mdpi.com/2073-4360/8/4/108 |
| article html file updated | 21 September 2019 13:49 CEST | Update | N/A |
| article html file updated | 5 May 2019 20:36 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:10 CET | Update | N/A |
| article html file updated | 15 March 2019 11:47 CET | Original file | N/A |
| article xml uploaded. | 24 March 2016 08:43 CET | Original file | https://www.mdpi.com/2073-4360/8/4/108/xml |
| article pdf uploaded. | 24 March 2016 08:43 CET | Version of Record | https://www.mdpi.com/2073-4360/8/4/108/pdf |
