| article html file updated | 7 February 2020 07:09 CET | Update | https://www.mdpi.com/2072-6651/8/4/108 |
| article html file updated | 5 May 2019 18:52 CEST | Update | - |
| article html file updated | 27 March 2019 01:40 CET | Update | - |
| article html file updated | 28 April 2016 10:30 CEST | Update | - |
| article html file updated | 12 April 2016 14:09 CEST | Original file | - |
| article xml uploaded. | 12 April 2016 14:08 CEST | Original file | https://www.mdpi.com/2072-6651/8/4/108/xml |
| article pdf uploaded. | 12 April 2016 14:08 CEST | Version of Record | https://www.mdpi.com/2072-6651/8/4/108/pdf |
