| article html file updated | 8 February 2020 03:41 CET | Update | https://www.mdpi.com/1999-4907/8/4/122 |
| article html file updated | 24 September 2019 08:16 CEST | Update | - |
| article html file updated | 4 May 2019 02:03 CEST | Update | - |
| article html file updated | 28 April 2017 06:43 CEST | Update | - |
| article html file updated | 18 April 2017 11:09 CEST | Original file | - |
| article xml uploaded. | 18 April 2017 11:08 CEST | Original file | https://www.mdpi.com/1999-4907/8/4/122/xml |
| article pdf uploaded. | 18 April 2017 11:08 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/4/122/pdf |
| article pdf uploaded. | 15 April 2017 09:09 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/4/122/pdf-vor |
