| article html file updated | 7 February 2020 22:17 CET | Update | https://www.mdpi.com/1422-0067/18/2/253 |
| article html file updated | 23 September 2019 01:50 CEST | Update | - |
| article html file updated | 4 May 2019 13:29 CEST | Update | - |
| article html file updated | 2 March 2017 09:45 CET | Update | - |
| article html file updated | 26 January 2017 09:26 CET | Original file | - |
| article xml uploaded. | 26 January 2017 09:24 CET | Original file | https://www.mdpi.com/1422-0067/18/2/253/xml |
| article pdf uploaded. | 26 January 2017 09:24 CET | Version of Record | https://www.mdpi.com/1422-0067/18/2/253/pdf |
