| article html file updated | 7 February 2020 04:31 CET | Update | https://www.mdpi.com/1999-4915/8/2/48 |
| article html file updated | 6 May 2019 00:28 CEST | Update | - |
| article html file updated | 26 March 2019 20:37 CET | Original file | - |
| article pdf uploaded. | 19 February 2016 10:34 CET | Updated version of record | https://www.mdpi.com/1999-4915/8/2/48/pdf |
| article xml uploaded. | 19 February 2016 10:34 CET | Original file | https://www.mdpi.com/1999-4915/8/2/48/xml |
| article pdf uploaded. | 11 February 2016 16:16 CET | Version of Record | https://www.mdpi.com/1999-4915/8/2/48/pdf-vor |
