| article html file updated | 8 February 2020 05:31 CET | Update | https://www.mdpi.com/2297-8739/4/2/17 |
| article html file updated | 24 September 2019 18:06 CEST | Update | - |
| article html file updated | 3 May 2019 22:41 CEST | Update | - |
| article html file updated | 30 June 2017 09:14 CEST | Update | - |
| article html file updated | 23 May 2017 03:59 CEST | Update | - |
| article html file updated | 10 May 2017 13:12 CEST | Original file | - |
| article xml uploaded. | 10 May 2017 13:11 CEST | Original file | https://www.mdpi.com/2297-8739/4/2/17/xml |
| article pdf uploaded. | 10 May 2017 13:11 CEST | Version of Record | https://www.mdpi.com/2297-8739/4/2/17/pdf |
