| article html file updated | 8 February 2020 20:54 CET | Update | https://www.mdpi.com/2079-6439/5/4/42 |
| article html file updated | 28 September 2019 09:36 CEST | Update | - |
| article html file updated | 2 May 2019 15:39 CEST | Update | - |
| article html file updated | 2 January 2018 11:32 CET | Update | - |
| article html file updated | 10 November 2017 15:53 CET | Original file | - |
| article xml uploaded. | 10 November 2017 15:51 CET | Update | https://www.mdpi.com/2079-6439/5/4/42/xml |
| article xml uploaded. | 10 November 2017 15:51 CET | Update | - |
| article xml uploaded. | 10 November 2017 15:51 CET | Original file | - |
| article pdf uploaded. | 10 November 2017 15:51 CET | Version of Record | https://www.mdpi.com/2079-6439/5/4/42/pdf |
