| article html file updated | 6 February 2020 06:53 CET | Update | https://www.mdpi.com/1422-0067/15/2/1686 |
| article html file updated | 7 May 2019 19:28 CEST | Update | - |
| article html file updated | 21 March 2019 11:26 CET | Update | - |
| article html file updated | 19 August 2015 18:27 CEST | Update | - |
| article html file updated | 20 March 2014 09:42 CET | Original file | - |
| article xml file uploaded | 20 March 2014 09:42 CET | Original file | https://www.mdpi.com/1422-0067/15/2/1686/xml |
| article pdf uploaded. | 23 January 2014 12:02 CET | Version of Record | https://www.mdpi.com/1422-0067/15/2/1686/pdf |
