| article html file updated | 7 February 2020 07:29 CET | Update | https://www.mdpi.com/2072-6643/8/4/228 |
| article html file updated | 21 September 2019 15:29 CEST | Update | - |
| article html file updated | 5 May 2019 18:12 CEST | Update | - |
| article html file updated | 27 March 2019 02:19 CET | Update | - |
| article html file updated | 28 April 2016 09:29 CEST | Update | - |
| article html file updated | 19 April 2016 15:05 CEST | Original file | - |
| article xml uploaded. | 19 April 2016 15:03 CEST | Original file | https://www.mdpi.com/2072-6643/8/4/228/xml |
| article pdf uploaded. | 19 April 2016 15:03 CEST | Version of Record | https://www.mdpi.com/2072-6643/8/4/228/pdf |
