| article html file updated | 7 February 2020 19:41 CET | Update | https://www.mdpi.com/2078-2489/7/4/72 |
| article html file updated | 4 May 2019 19:03 CEST | Update | - |
| article html file updated | 29 December 2016 11:12 CET | Update | - |
| article html file updated | 15 December 2016 14:49 CET | Original file | - |
| article xml uploaded. | 15 December 2016 14:48 CET | Update | https://www.mdpi.com/2078-2489/7/4/72/xml |
| article xml uploaded. | 15 December 2016 14:48 CET | Original file | - |
| article pdf uploaded. | 15 December 2016 14:48 CET | Version of Record | https://www.mdpi.com/2078-2489/7/4/72/pdf |
