| article html file updated | 7 February 2020 21:43 CET | Update | https://www.mdpi.com/1422-0067/18/1/137 |
| article html file updated | 22 September 2019 22:44 CEST | Update | - |
| article html file updated | 4 May 2019 14:39 CEST | Update | - |
| article html file updated | 8 February 2017 11:01 CET | Update | - |
| article html file updated | 18 January 2017 12:27 CET | Original file | - |
| article xml uploaded. | 18 January 2017 12:25 CET | Update | https://www.mdpi.com/1422-0067/18/1/137/xml |
| article xml uploaded. | 18 January 2017 12:25 CET | Original file | - |
| article pdf uploaded. | 18 January 2017 12:25 CET | Version of Record | https://www.mdpi.com/1422-0067/18/1/137/pdf |
