| article html file updated | 7 February 2020 19:14 CET | Update | https://www.mdpi.com/1999-4907/7/12/310 |
| article html file updated | 4 May 2019 20:04 CEST | Update | - |
| article html file updated | 27 December 2016 11:45 CET | Update | - |
| article html file updated | 7 December 2016 11:04 CET | Update | - |
| article html file updated | 7 December 2016 11:04 CET | Original file | - |
| article xml uploaded. | 7 December 2016 11:03 CET | Update | https://www.mdpi.com/1999-4907/7/12/310/xml |
| article pdf uploaded. | 7 December 2016 11:03 CET | Updated version of record | https://www.mdpi.com/1999-4907/7/12/310/pdf |
| article xml uploaded. | 7 December 2016 11:03 CET | Original file | - |
| article pdf uploaded. | 7 December 2016 11:03 CET | Version of Record | https://www.mdpi.com/1999-4907/7/12/310/pdf-vor |
