| article html file updated | 9 February 2020 03:28 CET | Update | https://www.mdpi.com/2227-9032/6/1/7 |
| article html file updated | 30 September 2019 00:30 CEST | Update | N/A |
| article html file updated | 2 May 2019 01:26 CEST | Update | N/A |
| article html file updated | 17 April 2019 23:45 CEST | Update | N/A |
| article html file updated | 28 March 2019 16:29 CET | Update | N/A |
| article html file updated | 27 March 2018 14:36 CEST | Update | N/A |
| article html file updated | 18 January 2018 08:19 CET | Original file | N/A |
| article xml uploaded. | 18 January 2018 08:18 CET | Original file | https://www.mdpi.com/2227-9032/6/1/7/xml |
| article pdf uploaded. | 18 January 2018 08:18 CET | Version of Record | https://www.mdpi.com/2227-9032/6/1/7/pdf |
