| article html file updated | 7 February 2020 21:47 CET | Update | https://www.mdpi.com/2075-4663/5/1/8 |
| article html file updated | 22 September 2019 23:10 CEST | Update | - |
| article html file updated | 4 May 2019 14:30 CEST | Update | - |
| article html file updated | 30 March 2017 09:02 CEST | Update | - |
| article html file updated | 19 January 2017 10:31 CET | Original file | - |
| article xml uploaded. | 19 January 2017 10:29 CET | Original file | https://www.mdpi.com/2075-4663/5/1/8/xml |
| article pdf uploaded. | 19 January 2017 10:29 CET | Version of Record | https://www.mdpi.com/2075-4663/5/1/8/pdf |
