| article html file updated | 8 February 2020 00:39 CET | Update | https://www.mdpi.com/2075-4442/5/1/6 |
| article html file updated | 23 September 2019 15:08 CEST | Update | - |
| article html file updated | 4 May 2019 08:31 CEST | Update | - |
| article html file updated | 29 March 2017 10:31 CEST | Update | - |
| article html file updated | 3 March 2017 06:31 CET | Original file | - |
| article xml uploaded. | 3 March 2017 06:30 CET | Original file | https://www.mdpi.com/2075-4442/5/1/6/xml |
| article pdf uploaded. | 3 March 2017 06:30 CET | Version of Record | https://www.mdpi.com/2075-4442/5/1/6/pdf |
