| article html file updated | 7 February 2020 05:40 CET | Update | https://www.mdpi.com/1420-3049/21/3/321 |
| article html file updated | 21 September 2019 12:50 CEST | Update | - |
| article html file updated | 5 May 2019 21:57 CEST | Update | - |
| article html file updated | 26 March 2019 23:01 CET | Update | - |
| article html file updated | 17 September 2018 03:17 CEST | Update | - |
| article html file updated | 31 March 2016 02:54 CEST | Original file | - |
| article pdf uploaded. | 9 March 2016 11:09 CET | Version of Record | https://www.mdpi.com/1420-3049/21/3/321/pdf |
| article xml uploaded. | 9 March 2016 11:09 CET | Original file | https://www.mdpi.com/1420-3049/21/3/321/xml |
