| article html file updated | 7 February 2020 22:36 CET | Update | https://www.mdpi.com/2227-9032/5/1/6 |
| article html file updated | 23 September 2019 03:30 CEST | Update | - |
| article html file updated | 4 May 2019 12:50 CEST | Update | - |
| article html file updated | 30 March 2017 11:34 CEST | Update | - |
| article html file updated | 4 February 2017 11:52 CET | Update | - |
| article html file updated | 4 February 2017 11:52 CET | Update | - |
| article xml uploaded. | 4 February 2017 11:51 CET | Original file | https://www.mdpi.com/2227-9032/5/1/6/xml |
| article pdf uploaded. | 4 February 2017 11:51 CET | Updated version of record | https://www.mdpi.com/2227-9032/5/1/6/pdf |
| article html file updated | 4 February 2017 05:36 CET | Original file | - |
| article pdf uploaded. | 3 February 2017 11:29 CET | Version of Record | - |
