| article html file updated | 6 February 2020 13:53 CET | Update | https://www.mdpi.com/1422-0067/15/12/21621 |
| article html file updated | 7 May 2019 05:02 CEST | Update | N/A |
| article html file updated | 25 March 2019 18:13 CET | Update | N/A |
| article html file updated | 21 August 2015 02:37 CEST | Update | N/A |
| article html file updated | 6 January 2015 09:19 CET | Original file | N/A |
| article xml file uploaded | 6 January 2015 09:19 CET | Original file | https://www.mdpi.com/1422-0067/15/12/21621/xml |
| article pdf uploaded. | 25 November 2014 13:24 CET | Version of Record | https://www.mdpi.com/1422-0067/15/12/21621/pdf |
