| article html file updated | 7 February 2020 21:05 CET | Update | https://www.mdpi.com/1999-4923/9/1/5 |
| article html file updated | 4 May 2019 16:08 CEST | Update | N/A |
| article html file updated | 31 March 2017 05:35 CEST | Update | N/A |
| article html file updated | 10 January 2017 14:33 CET | Original file | N/A |
| article xml uploaded. | 10 January 2017 14:32 CET | Original file | https://www.mdpi.com/1999-4923/9/1/5/xml |
| article pdf uploaded. | 10 January 2017 14:32 CET | Version of Record | https://www.mdpi.com/1999-4923/9/1/5/pdf |
