| article html file updated | 8 February 2020 03:50 CET | Update | https://www.mdpi.com/2073-4360/9/4/141 |
| article html file updated | 24 September 2019 09:13 CEST | Update | - |
| article html file updated | 4 May 2019 01:45 CEST | Update | - |
| article html file updated | 18 March 2019 05:36 CET | Update | - |
| article html file updated | 28 April 2017 10:39 CEST | Update | - |
| article html file updated | 18 April 2017 13:52 CEST | Original file | - |
| article xml uploaded. | 18 April 2017 13:51 CEST | Original file | https://www.mdpi.com/2073-4360/9/4/141/xml |
| article pdf uploaded. | 18 April 2017 13:51 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/4/141/pdf |
