| article html file updated | 8 February 2020 02:53 CET | Update | https://www.mdpi.com/1996-1073/10/4/480 |
| article html file updated | 24 September 2019 03:55 CEST | Update | - |
| article html file updated | 4 May 2019 03:37 CEST | Update | - |
| article html file updated | 28 April 2017 06:06 CEST | Update | - |
| article html file updated | 4 April 2017 11:59 CEST | Original file | - |
| article xml uploaded. | 4 April 2017 11:58 CEST | Update | https://www.mdpi.com/1996-1073/10/4/480/xml |
| article pdf uploaded. | 4 April 2017 11:58 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/480/pdf |
