| article html file updated | 7 February 2020 20:54 CET | Update | https://www.mdpi.com/2073-4344/7/1/19 |
| article html file updated | 22 September 2019 18:31 CEST | Update | - |
| article html file updated | 4 May 2019 16:32 CEST | Update | - |
| article html file updated | 7 February 2017 04:03 CET | Update | - |
| article html file updated | 6 January 2017 10:48 CET | Original file | - |
| article xml uploaded. | 6 January 2017 10:47 CET | Original file | https://www.mdpi.com/2073-4344/7/1/19/xml |
| article pdf uploaded. | 6 January 2017 10:47 CET | Version of Record | https://www.mdpi.com/2073-4344/7/1/19/pdf |
