| article html file updated | 6 February 2020 11:46 CET | Update | https://www.mdpi.com/1422-0067/15/9/15011 |
| article html file updated | 7 May 2019 09:09 CEST | Update | - |
| article html file updated | 21 March 2019 23:46 CET | Update | - |
| article html file updated | 20 August 2015 16:31 CEST | Update | - |
| article html file updated | 19 October 2014 15:58 CEST | Original file | - |
| article xml file uploaded | 19 October 2014 15:58 CEST | Original file | https://www.mdpi.com/1422-0067/15/9/15011/xml |
| article pdf uploaded. | 26 August 2014 08:31 CEST | Version of Record | https://www.mdpi.com/1422-0067/15/9/15011/pdf |
