| article html file updated | 7 February 2020 22:16 CET | Update | https://www.mdpi.com/1422-0067/18/2/251 |
| article html file updated | 23 September 2019 01:49 CEST | Update | N/A |
| article html file updated | 4 May 2019 13:30 CEST | Update | N/A |
| article html file updated | 2 March 2017 09:45 CET | Update | N/A |
| article html file updated | 26 January 2017 09:19 CET | Original file | N/A |
| article xml uploaded. | 26 January 2017 09:18 CET | Update | https://www.mdpi.com/1422-0067/18/2/251/xml |
| article xml uploaded. | 26 January 2017 09:18 CET | Original file | N/A |
| article pdf uploaded. | 26 January 2017 09:18 CET | Version of Record | https://www.mdpi.com/1422-0067/18/2/251/pdf |
