| article html file updated | 7 February 2020 08:21 CET | Update | https://www.mdpi.com/1996-1073/9/5/351 |
| article html file updated | 5 May 2019 16:28 CEST | Update | - |
| article html file updated | 27 March 2019 04:04 CET | Update | - |
| article html file updated | 26 May 2016 12:54 CEST | Update | - |
| article html file updated | 7 May 2016 12:46 CEST | Original file | - |
| article xml uploaded. | 7 May 2016 12:44 CEST | Update | https://www.mdpi.com/1996-1073/9/5/351/xml |
| article pdf uploaded. | 7 May 2016 12:44 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/5/351/pdf |
