| article html file updated | 7 February 2020 19:17 CET | Update | https://www.mdpi.com/2076-3263/6/4/55 |
| article html file updated | 22 September 2019 09:36 CEST | Update | - |
| article html file updated | 4 May 2019 19:57 CEST | Update | - |
| article html file updated | 8 December 2016 12:09 CET | Original file | - |
| article xml uploaded. | 8 December 2016 12:08 CET | Update | https://www.mdpi.com/2076-3263/6/4/55/xml |
| article xml uploaded. | 8 December 2016 12:08 CET | Original file | - |
| article pdf uploaded. | 8 December 2016 12:08 CET | Version of Record | https://www.mdpi.com/2076-3263/6/4/55/pdf |
