| article html file updated | 8 February 2020 03:42 CET | Update | https://www.mdpi.com/2071-1050/9/4/620 |
| article html file updated | 24 September 2019 08:27 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:00 CEST | Update | N/A |
| article html file updated | 28 April 2017 11:06 CEST | Update | N/A |
| article html file updated | 16 April 2017 11:51 CEST | Original file | N/A |
| article xml uploaded. | 16 April 2017 11:50 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/620/xml |
| article pdf uploaded. | 16 April 2017 11:50 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/620/pdf |
