| article html file updated | 7 February 2020 04:51 CET | Update | https://www.mdpi.com/1420-3049/21/2/254 |
| article html file updated | 21 September 2019 11:44 CEST | Update | - |
| article html file updated | 5 May 2019 23:40 CEST | Update | - |
| article html file updated | 26 March 2019 21:20 CET | Update | - |
| article html file updated | 17 September 2018 03:25 CEST | Original file | - |
| article pdf uploaded. | 22 February 2016 11:23 CET | Version of Record | https://www.mdpi.com/1420-3049/21/2/254/pdf |
| article xml uploaded. | 22 February 2016 11:23 CET | Original file | https://www.mdpi.com/1420-3049/21/2/254/xml |
