| article html file updated | 7 February 2020 03:55 CET | Update | https://www.mdpi.com/1420-3049/21/2/32 |
| article html file updated | 21 September 2019 10:24 CEST | Update | - |
| article html file updated | 6 May 2019 01:40 CEST | Update | - |
| article html file updated | 26 March 2019 19:25 CET | Update | - |
| article html file updated | 17 September 2018 02:47 CEST | Original file | - |
| article pdf uploaded. | 26 January 2016 15:45 CET | Version of Record | https://www.mdpi.com/1420-3049/21/2/32/pdf |
| article xml uploaded. | 26 January 2016 15:45 CET | Original file | https://www.mdpi.com/1420-3049/21/2/32/xml |
