| article html file updated | 6 February 2020 15:28 CET | Update | https://www.mdpi.com/1911-8074/8/1/43 |
| article html file updated | 7 May 2019 01:54 CEST | Update | - |
| article html file updated | 25 March 2019 20:59 CET | Update | - |
| article html file updated | 28 October 2015 11:04 CET | Original file | - |
| article xml file uploaded | 28 October 2015 11:04 CET | Original file | https://www.mdpi.com/1911-8074/8/1/43/xml |
| article pdf uploaded. | 26 January 2015 16:39 CET | Version of Record | https://www.mdpi.com/1911-8074/8/1/43/pdf |
