| article html file updated | 6 February 2020 06:55 CET | Update | https://www.mdpi.com/1422-0067/15/2/1812 |
| article html file updated | 7 May 2019 19:24 CEST | Update | N/A |
| article html file updated | 21 March 2019 11:30 CET | Update | N/A |
| article html file updated | 19 August 2015 18:40 CEST | Update | N/A |
| article html file updated | 20 March 2014 09:46 CET | Original file | N/A |
| article xml file uploaded | 20 March 2014 09:45 CET | Original file | https://www.mdpi.com/1422-0067/15/2/1812/xml |
| article pdf uploaded. | 24 January 2014 11:31 CET | Version of Record | https://www.mdpi.com/1422-0067/15/2/1812/pdf |
