| article html file updated | 6 February 2020 18:34 CET | Update | https://www.mdpi.com/2071-1050/7/5/5920 |
| article html file updated | 6 May 2019 20:10 CEST | Update | - |
| article html file updated | 26 March 2019 02:29 CET | Update | - |
| article html file updated | 21 August 2015 12:05 CEST | Update | - |
| article html file updated | 19 May 2015 11:21 CEST | Original file | - |
| article xml file uploaded | 19 May 2015 11:21 CEST | Original file | https://www.mdpi.com/2071-1050/7/5/5920/xml |
| article pdf uploaded. | 13 May 2015 14:08 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/5/5920/pdf |
