| article html file updated | 8 February 2020 23:13 CET | Update | https://www.mdpi.com/2226-471X/2/4/25 |
| article html file updated | 2 May 2019 10:27 CEST | Update | - |
| article html file updated | 18 April 2019 08:05 CEST | Update | - |
| article html file updated | 5 December 2017 16:07 CET | Original file | - |
| article xml uploaded. | 5 December 2017 16:06 CET | Update | https://www.mdpi.com/2226-471X/2/4/25/xml |
| article xml uploaded. | 5 December 2017 16:06 CET | Original file | - |
| article pdf uploaded. | 5 December 2017 16:06 CET | Version of Record | https://www.mdpi.com/2226-471X/2/4/25/pdf |
