| article html file updated | 8 February 2020 02:19 CET | Update | https://www.mdpi.com/2073-4360/9/4/124 |
| article html file updated | 24 September 2019 00:38 CEST | Update | - |
| article html file updated | 4 May 2019 04:53 CEST | Update | - |
| article html file updated | 18 March 2019 05:32 CET | Update | - |
| article html file updated | 28 April 2017 10:35 CEST | Update | - |
| article html file updated | 27 March 2017 14:53 CEST | Original file | - |
| article xml uploaded. | 27 March 2017 14:52 CEST | Original file | https://www.mdpi.com/2073-4360/9/4/124/xml |
| article pdf uploaded. | 27 March 2017 14:52 CEST | Updated version of record | https://www.mdpi.com/2073-4360/9/4/124/pdf |
