| article html file updated | 8 February 2020 02:27 CET | Update | https://www.mdpi.com/2218-1989/7/2/12 |
| article html file updated | 24 September 2019 01:21 CEST | Update | - |
| article html file updated | 4 May 2019 04:36 CEST | Update | - |
| article html file updated | 28 June 2017 13:53 CEST | Update | - |
| article html file updated | 29 March 2017 09:40 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 09:37 CEST | Update | https://www.mdpi.com/2218-1989/7/2/12/xml |
| article pdf uploaded. | 29 March 2017 09:37 CEST | Version of Record | https://www.mdpi.com/2218-1989/7/2/12/pdf |
