| article html file updated | 6 February 2020 12:06 CET | Update | https://www.mdpi.com/1422-0067/15/9/15981 |
| article html file updated | 7 May 2019 08:33 CEST | Update | - |
| article html file updated | 22 March 2019 00:34 CET | Update | - |
| article html file updated | 20 August 2015 18:05 CEST | Update | - |
| article html file updated | 19 October 2014 16:00 CEST | Original file | - |
| article xml file uploaded | 19 October 2014 16:00 CEST | Original file | https://www.mdpi.com/1422-0067/15/9/15981/xml |
| article pdf uploaded. | 10 September 2014 11:55 CEST | Version of Record | https://www.mdpi.com/1422-0067/15/9/15981/pdf |
