| article html file updated | 7 February 2020 21:37 CET | Update | https://www.mdpi.com/1422-0067/18/1/3 |
| article html file updated | 22 September 2019 22:13 CEST | Update | - |
| article html file updated | 4 May 2019 14:53 CEST | Update | - |
| article html file updated | 8 February 2017 10:41 CET | Update | - |
| article html file updated | 17 January 2017 11:52 CET | Original file | - |
| article xml uploaded. | 17 January 2017 11:50 CET | Update | https://www.mdpi.com/1422-0067/18/1/3/xml |
| article xml uploaded. | 17 January 2017 11:50 CET | Original file | - |
| article pdf uploaded. | 17 January 2017 11:50 CET | Version of Record | https://www.mdpi.com/1422-0067/18/1/3/pdf |
