| article html file updated | 9 February 2020 06:02 CET | Update | https://www.mdpi.com/2227-9032/6/1/13 |
| article html file updated | 30 September 2019 15:49 CEST | Update | - |
| article html file updated | 1 May 2019 19:48 CEST | Update | - |
| article html file updated | 17 April 2019 18:55 CEST | Update | - |
| article html file updated | 28 March 2019 22:03 CET | Update | - |
| article html file updated | 27 March 2018 14:36 CEST | Update | - |
| article html file updated | 9 February 2018 09:38 CET | Original file | - |
| article xml uploaded. | 9 February 2018 09:37 CET | Original file | https://www.mdpi.com/2227-9032/6/1/13/xml |
| article pdf uploaded. | 9 February 2018 09:37 CET | Version of Record | https://www.mdpi.com/2227-9032/6/1/13/pdf |
