| article html file updated | 8 February 2020 03:16 CET | Update | https://new.mdpi.com/2076-0825/6/2/15 |
| article html file updated | 24 September 2019 06:02 CEST | Update | - |
| article html file updated | 4 May 2019 02:48 CEST | Update | - |
| article html file updated | 28 June 2017 12:15 CEST | Update | - |
| article html file updated | 10 April 2017 14:32 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 14:31 CEST | Update | https://new.mdpi.com/2076-0825/6/2/15/xml |
| article pdf uploaded. | 10 April 2017 14:31 CEST | Version of Record | https://new.mdpi.com/2076-0825/6/2/15/pdf |
