| article html file updated | 7 February 2020 21:11 CET | Update | https://www.mdpi.com/1999-4907/8/1/23 |
| article html file updated | 4 May 2019 15:55 CEST | Update | - |
| article html file updated | 8 February 2017 10:20 CET | Update | - |
| article html file updated | 11 January 2017 08:56 CET | Original file | - |
| article pdf uploaded. | 11 January 2017 08:55 CET | Updated version of record | https://www.mdpi.com/1999-4907/8/1/23/pdf |
| article xml uploaded. | 11 January 2017 08:55 CET | Original file | https://www.mdpi.com/1999-4907/8/1/23/xml |
| article pdf uploaded. | 11 January 2017 08:55 CET | Version of Record | - |
