| article html file updated | 6 February 2020 16:04 CET | Update | https://www.mdpi.com/2071-1050/7/2/2213 |
| article html file updated | 7 May 2019 00:45 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:58 CET | Update | N/A |
| article html file updated | 21 August 2015 07:52 CEST | Update | N/A |
| article html file updated | 28 February 2015 03:11 CET | Original file | N/A |
| article xml file uploaded | 28 February 2015 03:11 CET | Original file | https://www.mdpi.com/2071-1050/7/2/2213/xml |
| article pdf uploaded. | 17 February 2015 12:04 CET | Version of Record | https://www.mdpi.com/2071-1050/7/2/2213/pdf |
