| article html file updated | 7 February 2020 03:56 CET | Update | https://www.mdpi.com/2076-0817/5/1/12 |
| article html file updated | 6 May 2019 01:37 CEST | Update | - |
| article html file updated | 26 March 2019 19:28 CET | Update | - |
| article html file updated | 29 March 2016 07:18 CEST | Original file | - |
| article pdf uploaded. | 27 January 2016 09:25 CET | Version of Record | https://www.mdpi.com/2076-0817/5/1/12/pdf |
| article xml uploaded. | 27 January 2016 09:25 CET | Original file | https://www.mdpi.com/2076-0817/5/1/12/xml |
