| article html file updated | 8 February 2020 03:46 CET | Update | https://www.mdpi.com/1996-1073/10/4/546 |
| article html file updated | 24 September 2019 08:53 CEST | Update | - |
| article html file updated | 4 May 2019 01:51 CEST | Update | - |
| article html file updated | 28 April 2017 06:23 CEST | Update | - |
| article html file updated | 17 April 2017 16:01 CEST | Original file | - |
| article xml uploaded. | 17 April 2017 15:59 CEST | Original file | https://www.mdpi.com/1996-1073/10/4/546/xml |
| article pdf uploaded. | 17 April 2017 15:59 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/546/pdf |
