| article html file updated | 7 February 2020 21:59 CET | Update | https://www.mdpi.com/1999-4907/8/1/29 |
| article html file updated | 23 September 2019 00:17 CEST | Update | N/A |
| article html file updated | 4 May 2019 14:03 CEST | Update | N/A |
| article html file updated | 8 February 2017 10:26 CET | Update | N/A |
| article html file updated | 22 January 2017 11:10 CET | Original file | N/A |
| article xml uploaded. | 22 January 2017 11:09 CET | Original file | https://www.mdpi.com/1999-4907/8/1/29/xml |
| article pdf uploaded. | 22 January 2017 11:09 CET | Version of Record | https://www.mdpi.com/1999-4907/8/1/29/pdf |
