| article html file updated | 6 February 2020 18:03 CET | Update | https://www.mdpi.com/1999-4923/7/2/43 |
| article html file updated | 6 May 2019 21:10 CEST | Update | N/A |
| article html file updated | 26 March 2019 01:26 CET | Update | N/A |
| article html file updated | 21 August 2015 11:11 CEST | Update | N/A |
| article html file updated | 7 July 2015 04:43 CEST | Original file | N/A |
| article xml file uploaded | 7 July 2015 04:43 CEST | Original file | https://www.mdpi.com/1999-4923/7/2/43/xml |
| article pdf uploaded. | 27 April 2015 09:54 CEST | Version of Record | https://www.mdpi.com/1999-4923/7/2/43/pdf |
