| article html file updated | 7 February 2020 22:49 CET | Update | https://www.mdpi.com/2076-328X/7/1/6 |
| article html file updated | 23 September 2019 04:49 CEST | Update | - |
| article html file updated | 4 May 2019 12:23 CEST | Update | - |
| article html file updated | 30 March 2017 10:54 CEST | Update | - |
| article html file updated | 8 February 2017 06:32 CET | Original file | - |
| article xml uploaded. | 8 February 2017 06:30 CET | Original file | https://www.mdpi.com/2076-328X/7/1/6/xml |
| article pdf uploaded. | 8 February 2017 06:30 CET | Version of Record | https://www.mdpi.com/2076-328X/7/1/6/pdf |
