| article html file updated | 9 February 2020 00:10 CET | Update | https://www.mdpi.com/2075-4418/7/4/61 |
| article html file updated | 29 September 2019 05:47 CEST | Update | - |
| article html file updated | 2 May 2019 08:22 CEST | Update | - |
| article html file updated | 18 April 2019 06:09 CEST | Update | - |
| article html file updated | 2 January 2018 15:30 CET | Update | - |
| article html file updated | 15 December 2017 09:00 CET | Original file | - |
| article pdf uploaded. | 15 December 2017 09:00 CET | Version of Record | https://www.mdpi.com/2075-4418/7/4/61/pdf |
| article xml uploaded. | 15 December 2017 08:59 CET | Original file | https://www.mdpi.com/2075-4418/7/4/61/xml |
