| article html file updated | 6 February 2020 02:29 CET | Update | https://www.mdpi.com/1422-0067/14/6/11915 |
| article html file updated | 8 May 2019 04:22 CEST | Update | N/A |
| article html file updated | 20 March 2019 23:25 CET | Update | N/A |
| article html file updated | 17 June 2015 09:59 CEST | Update | N/A |
| article html file updated | 19 July 2013 10:34 CEST | Original file | N/A |
| article xml file uploaded | 19 July 2013 10:33 CEST | Original file | https://www.mdpi.com/1422-0067/14/6/11915/xml |
| article pdf uploaded. | 4 June 2013 14:34 CEST | Version of Record | https://www.mdpi.com/1422-0067/14/6/11915/pdf |
