| article html file updated | 7 February 2020 12:06 CET | Update | https://www.mdpi.com/1999-4907/7/7/151 |
| article html file updated | 5 May 2019 09:25 CEST | Update | N/A |
| article html file updated | 27 March 2019 11:03 CET | Update | N/A |
| article html file updated | 27 July 2016 12:33 CEST | Update | N/A |
| article html file updated | 22 July 2016 11:11 CEST | Original file | N/A |
| article xml uploaded. | 22 July 2016 11:09 CEST | Original file | https://www.mdpi.com/1999-4907/7/7/151/xml |
| article pdf uploaded. | 22 July 2016 11:09 CEST | Version of Record | https://www.mdpi.com/1999-4907/7/7/151/pdf |
