| article html file updated | 7 February 2020 02:47 CET | Update | https://www.mdpi.com/1420-3049/21/1/8 |
| article html file updated | 21 September 2019 08:47 CEST | Update | - |
| article html file updated | 6 May 2019 03:47 CEST | Update | - |
| article html file updated | 26 March 2019 17:22 CET | Update | - |
| article html file updated | 12 November 2018 03:57 CET | Original file | - |
| article pdf uploaded. | 28 December 2015 13:04 CET | Version of Record | https://www.mdpi.com/1420-3049/21/1/8/pdf |
| article xml uploaded. | 28 December 2015 13:04 CET | Original file | https://www.mdpi.com/1420-3049/21/1/8/xml |
