| article html file updated | 6 February 2020 17:00 CET | Update | https://www.mdpi.com/1422-0067/16/4/6868 |
| article html file updated | 6 May 2019 23:05 CEST | Update | - |
| article html file updated | 25 March 2019 23:36 CET | Update | - |
| article html file updated | 21 August 2015 09:22 CEST | Update | - |
| article html file updated | 7 May 2015 12:03 CEST | Original file | - |
| article xml file uploaded | 7 May 2015 12:03 CEST | Original file | https://www.mdpi.com/1422-0067/16/4/6868/xml |
| article pdf uploaded. | 26 March 2015 08:33 CET | Version of Record | https://www.mdpi.com/1422-0067/16/4/6868/pdf |
