| article html file updated | 6 February 2020 21:27 CET | Update | https://www.mdpi.com/1911-8074/8/3/311 |
| article html file updated | 6 May 2019 14:13 CEST | Update | - |
| article html file updated | 26 March 2019 08:06 CET | Update | - |
| article html file updated | 9 November 2015 10:47 CET | Original file | - |
| article xml file uploaded | 9 November 2015 10:47 CET | Original file | https://www.mdpi.com/1911-8074/8/3/311/xml |
| article pdf uploaded. | 5 August 2015 14:16 CEST | Version of Record | https://www.mdpi.com/1911-8074/8/3/311/pdf |
