| article html file updated | 8 February 2020 04:20 CET | Update | https://www.mdpi.com/2073-8994/9/5/60 |
| article html file updated | 24 September 2019 12:03 CEST | Update | - |
| article html file updated | 4 May 2019 00:49 CEST | Update | - |
| article html file updated | 31 May 2017 07:58 CEST | Update | - |
| article html file updated | 25 April 2017 15:52 CEST | Original file | - |
| article xml uploaded. | 25 April 2017 15:51 CEST | Original file | https://www.mdpi.com/2073-8994/9/5/60/xml |
| article pdf uploaded. | 25 April 2017 15:51 CEST | Version of Record | https://www.mdpi.com/2073-8994/9/5/60/pdf |
