| article html file updated | 7 February 2020 21:13 CET | Update | https://www.mdpi.com/2227-7072/5/1/3 |
| article html file updated | 4 May 2019 15:51 CEST | Update | - |
| article html file updated | 29 March 2017 10:25 CEST | Update | - |
| article html file updated | 11 January 2017 10:38 CET | Original file | - |
| article xml uploaded. | 11 January 2017 10:37 CET | Original file | https://www.mdpi.com/2227-7072/5/1/3/xml |
| article pdf uploaded. | 11 January 2017 10:37 CET | Version of Record | https://www.mdpi.com/2227-7072/5/1/3/pdf |
