| article html file updated | 8 February 2020 15:47 CET | Update | https://www.mdpi.com/1999-4907/8/9/334 |
| article html file updated | 27 September 2019 01:19 CEST | Update | - |
| article html file updated | 3 May 2019 02:42 CEST | Update | - |
| article html file updated | 30 September 2017 10:23 CEST | Update | - |
| article html file updated | 10 September 2017 09:49 CEST | Original file | - |
| article xml uploaded. | 10 September 2017 09:47 CEST | Original file | https://www.mdpi.com/1999-4907/8/9/334/xml |
| article pdf uploaded. | 10 September 2017 09:47 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/9/334/pdf |
