| article html file updated | 7 February 2020 14:22 CET | Update | https://www.mdpi.com/2227-9040/4/3/18 |
| article html file updated | 5 May 2019 05:13 CEST | Update | - |
| article html file updated | 27 March 2019 15:53 CET | Update | - |
| article html file updated | 28 September 2016 08:35 CEST | Update | - |
| article html file updated | 2 September 2016 12:52 CEST | Original file | - |
| article xml uploaded. | 2 September 2016 12:51 CEST | Update | https://www.mdpi.com/2227-9040/4/3/18/xml |
| article xml uploaded. | 2 September 2016 12:51 CEST | Original file | - |
| article pdf uploaded. | 2 September 2016 12:51 CEST | Version of Record | https://www.mdpi.com/2227-9040/4/3/18/pdf |
