| article html file updated | 6 February 2020 14:28 CET | Update | https://www.mdpi.com/2077-0383/3/4/1437 |
| article html file updated | 20 September 2019 16:01 CEST | Update | - |
| article html file updated | 7 May 2019 03:56 CEST | Update | - |
| article html file updated | 25 March 2019 19:17 CET | Update | - |
| article html file updated | 21 August 2015 04:11 CEST | Update | - |
| article html file updated | 25 June 2015 12:08 CEST | Update | - |
| article xml file uploaded | 25 June 2015 12:08 CEST | Update | https://www.mdpi.com/2077-0383/3/4/1437/xml |
| article html file updated | 14 January 2015 05:17 CET | Original file | - |
| article xml file uploaded | 14 January 2015 05:17 CET | Original file | - |
| article pdf uploaded. | 15 December 2014 11:53 CET | Version of Record | https://www.mdpi.com/2077-0383/3/4/1437/pdf |
