| article html file updated | 7 February 2020 17:54 CET | Update | https://www.mdpi.com/2073-4395/6/4/58 |
| article html file updated | 22 September 2019 05:28 CEST | Update | - |
| article html file updated | 4 May 2019 22:43 CEST | Update | - |
| article html file updated | 29 December 2016 04:33 CET | Update | - |
| article html file updated | 12 November 2016 04:11 CET | Original file | - |
| article xml uploaded. | 12 November 2016 04:10 CET | Update | https://www.mdpi.com/2073-4395/6/4/58/xml |
| article xml uploaded. | 12 November 2016 04:10 CET | Original file | - |
| article pdf uploaded. | 12 November 2016 04:10 CET | Version of Record | https://www.mdpi.com/2073-4395/6/4/58/pdf |
