| article html file updated | 8 February 2020 06:15 CET | Update | https://www.mdpi.com/2306-7381/4/2/28 |
| article html file updated | 24 September 2019 21:58 CEST | Update | - |
| article html file updated | 3 May 2019 21:16 CEST | Update | - |
| article html file updated | 22 May 2017 04:53 CEST | Update | - |
| article html file updated | 19 May 2017 12:05 CEST | Original file | - |
| article xml uploaded. | 19 May 2017 12:03 CEST | Update | https://www.mdpi.com/2306-7381/4/2/28/xml |
| article pdf uploaded. | 19 May 2017 12:03 CEST | Version of Record | https://www.mdpi.com/2306-7381/4/2/28/pdf |
