| article html file updated | 6 February 2020 06:04 CET | Update | https://www.mdpi.com/1422-0067/14/12/23993 |
| article html file updated | 7 May 2019 21:05 CEST | Update | - |
| article html file updated | 21 March 2019 09:05 CET | Update | - |
| article html file updated | 19 August 2015 13:05 CEST | Update | - |
| article html file updated | 31 December 2013 09:27 CET | Original file | - |
| article xml file uploaded | 31 December 2013 09:27 CET | Original file | https://www.mdpi.com/1422-0067/14/12/23993/xml |
| article pdf uploaded. | 10 December 2013 11:56 CET | Version of Record | https://www.mdpi.com/1422-0067/14/12/23993/pdf |
