| article html file updated | 7 February 2020 16:44 CET | Update | https://www.mdpi.com/2075-4418/6/4/38 |
| article html file updated | 22 September 2019 03:37 CEST | Update | - |
| article html file updated | 5 May 2019 00:55 CEST | Update | - |
| article html file updated | 28 December 2016 11:46 CET | Update | - |
| article html file updated | 21 October 2016 03:59 CEST | Original file | - |
| article xml uploaded. | 21 October 2016 03:58 CEST | Update | https://www.mdpi.com/2075-4418/6/4/38/xml |
| article xml uploaded. | 21 October 2016 03:58 CEST | Original file | - |
| article pdf uploaded. | 21 October 2016 03:58 CEST | Version of Record | https://www.mdpi.com/2075-4418/6/4/38/pdf |
