| article html file updated | 6 February 2020 04:03 CET | Update | https://www.mdpi.com/1911-8074/4/1/43 |
| article html file updated | 8 May 2019 01:07 CEST | Update | - |
| article html file updated | 21 March 2019 03:47 CET | Update | - |
| article html file updated | 20 July 2017 08:42 CEST | Update | - |
| article html file updated | 20 July 2017 08:41 CEST | Update | - |
| article html file updated | 20 July 2017 08:41 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 08:39 CEST | Update | https://www.mdpi.com/1911-8074/4/1/43/xml |
| article pdf uploaded. | 28 August 2013 17:49 CEST | Version of Record | https://www.mdpi.com/1911-8074/4/1/43/pdf |
