| article html file updated | 6 February 2020 18:39 CET | Update | https://www.mdpi.com/1996-1073/8/5/4400 |
| article html file updated | 6 May 2019 19:59 CEST | Update | - |
| article html file updated | 26 March 2019 02:40 CET | Update | - |
| article html file updated | 21 August 2015 12:11 CEST | Update | - |
| article html file updated | 26 June 2015 09:19 CEST | Original file | - |
| article xml file uploaded | 26 June 2015 09:19 CEST | Original file | https://www.mdpi.com/1996-1073/8/5/4400/xml |
| article pdf uploaded. | 15 May 2015 10:00 CEST | Version of Record | https://www.mdpi.com/1996-1073/8/5/4400/pdf |
