| article html file updated | 7 February 2020 12:08 CET | Update | https://www.mdpi.com/2079-6374/6/3/38 |
| article html file updated | 5 May 2019 09:22 CEST | Update | - |
| article html file updated | 27 March 2019 11:06 CET | Update | - |
| article html file updated | 28 September 2016 22:52 CEST | Update | - |
| article html file updated | 22 July 2016 09:50 CEST | Original file | - |
| article xml uploaded. | 22 July 2016 09:49 CEST | Update | https://www.mdpi.com/2079-6374/6/3/38/xml |
| article pdf uploaded. | 22 July 2016 09:49 CEST | Version of Record | https://www.mdpi.com/2079-6374/6/3/38/pdf |
