| article html file updated | 7 February 2020 21:16 CET | Update | https://www.mdpi.com/2076-3905/6/1/2 |
| article html file updated | 4 May 2019 15:45 CEST | Update | - |
| article html file updated | 31 March 2017 05:29 CEST | Update | - |
| article pdf uploaded. | 12 January 2017 08:52 CET | Updated version of record | https://www.mdpi.com/2076-3905/6/1/2/pdf |
| article html file updated | 11 January 2017 13:05 CET | Update | - |
| article html file updated | 11 January 2017 13:05 CET | Update | - |
| article html file updated | 11 January 2017 13:05 CET | Original file | - |
| article xml uploaded. | 11 January 2017 13:04 CET | Original file | https://www.mdpi.com/2076-3905/6/1/2/xml |
| article pdf uploaded. | 11 January 2017 13:04 CET | Version of Record | - |
