| article html file updated | 8 February 2020 03:28 CET | Update | https://www.mdpi.com/1996-1073/10/4/523 |
| article html file updated | 24 September 2019 07:03 CEST | Update | - |
| article html file updated | 4 May 2019 02:25 CEST | Update | - |
| article html file updated | 28 April 2017 06:17 CEST | Update | - |
| article html file updated | 14 April 2017 05:33 CEST | Original file | - |
| article xml uploaded. | 14 April 2017 05:32 CEST | Update | https://www.mdpi.com/1996-1073/10/4/523/xml |
| article pdf uploaded. | 14 April 2017 05:32 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/523/pdf |
