| article html file updated | 6 February 2020 17:42 CET | Update | https://www.mdpi.com/2073-4360/7/4/747 |
| article html file updated | 6 May 2019 21:52 CEST | Update | - |
| article html file updated | 26 March 2019 00:44 CET | Update | - |
| article html file updated | 21 August 2015 10:35 CEST | Update | - |
| article html file updated | 27 April 2015 11:40 CEST | Original file | - |
| article xml file uploaded | 27 April 2015 11:40 CEST | Original file | https://www.mdpi.com/2073-4360/7/4/747/xml |
| article pdf uploaded. | 17 April 2015 08:22 CEST | Updated version of record | https://www.mdpi.com/2073-4360/7/4/747/pdf |
| article pdf uploaded. | 16 April 2015 10:21 CEST | Version of Record | https://www.mdpi.com/2073-4360/7/4/747/pdf-vor |
