| article html file updated | 8 February 2020 03:03 CET | Update | https://www.mdpi.com/1996-1073/10/4/492 |
| article html file updated | 24 September 2019 04:50 CEST | Update | - |
| article html file updated | 4 May 2019 03:15 CEST | Update | - |
| article html file updated | 28 April 2017 06:09 CEST | Update | - |
| article html file updated | 6 April 2017 14:04 CEST | Original file | - |
| article xml uploaded. | 6 April 2017 14:03 CEST | Update | https://www.mdpi.com/1996-1073/10/4/492/xml |
| article pdf uploaded. | 6 April 2017 14:03 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/492/pdf |
