| article html file updated | 8 February 2020 18:34 CET | Update | https://www.mdpi.com/2305-6304/5/4/28 |
| article html file updated | 27 September 2019 19:06 CEST | Update | - |
| article html file updated | 2 May 2019 21:03 CEST | Update | - |
| article html file updated | 3 January 2018 09:09 CET | Update | - |
| article html file updated | 16 October 2017 15:06 CEST | Original file | - |
| article xml uploaded. | 16 October 2017 15:05 CEST | Original file | https://www.mdpi.com/2305-6304/5/4/28/xml |
| article pdf uploaded. | 16 October 2017 15:05 CEST | Version of Record | https://www.mdpi.com/2305-6304/5/4/28/pdf |
