| article html file updated | 8 February 2020 03:13 CET | Update | https://www.mdpi.com/1999-4915/9/4/73 |
| article html file updated | 24 September 2019 05:46 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:55 CEST | Update | N/A |
| article html file updated | 29 April 2017 05:52 CEST | Update | N/A |
| article html file updated | 10 April 2017 11:11 CEST | Original file | N/A |
| article xml uploaded. | 10 April 2017 11:10 CEST | Original file | https://www.mdpi.com/1999-4915/9/4/73/xml |
| article pdf uploaded. | 10 April 2017 11:10 CEST | Updated version of record | https://www.mdpi.com/1999-4915/9/4/73/pdf |
| article pdf uploaded. | 9 April 2017 13:06 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/4/73/pdf-vor |
