| article html file updated | 7 February 2020 23:44 CET | Update | https://www.mdpi.com/1999-4915/9/2/32 |
| article html file updated | 23 September 2019 09:51 CEST | Update | - |
| article html file updated | 4 May 2019 10:35 CEST | Update | - |
| article html file updated | 2 March 2017 03:41 CET | Update | - |
| article html file updated | 18 February 2017 10:15 CET | Original file | - |
| article xml uploaded. | 18 February 2017 10:13 CET | Original file | https://www.mdpi.com/1999-4915/9/2/32/xml |
| article pdf uploaded. | 18 February 2017 10:13 CET | Version of Record | https://www.mdpi.com/1999-4915/9/2/32/pdf |
