| article html file updated | 8 February 2020 06:51 CET | Update | https://www.mdpi.com/1996-1073/10/6/749 |
| article html file updated | 25 September 2019 01:07 CEST | Update | - |
| article html file updated | 3 May 2019 20:08 CEST | Update | - |
| article html file updated | 27 June 2017 10:07 CEST | Update | - |
| article html file updated | 27 May 2017 08:10 CEST | Original file | - |
| article xml uploaded. | 27 May 2017 08:09 CEST | Original file | https://www.mdpi.com/1996-1073/10/6/749/xml |
| article pdf uploaded. | 27 May 2017 08:09 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/6/749/pdf |
