| article html file updated | 10 February 2020 20:11 CET | Update | https://www.mdpi.com/2218-6581/7/4/68 |
| article html file updated | 28 April 2019 11:00 CEST | Update | - |
| article html file updated | 14 April 2019 06:26 CEST | Update | - |
| article html file updated | 1 April 2019 18:01 CEST | Update | - |
| article html file updated | 25 December 2018 03:43 CET | Update | - |
| article html file updated | 7 November 2018 14:01 CET | Original file | - |
| article pdf uploaded. | 7 November 2018 14:00 CET | Version of Record | https://www.mdpi.com/2218-6581/7/4/68/pdf |
| article xml uploaded. | 7 November 2018 14:00 CET | Update | https://www.mdpi.com/2218-6581/7/4/68/xml |
| article xml file uploaded | 7 November 2018 14:00 CET | Original file | - |
