| article html file updated | 7 February 2020 10:38 CET | Update | https://www.mdpi.com/2227-9091/4/3/18 |
| article html file updated | 5 May 2019 12:04 CEST | Update | - |
| article html file updated | 27 March 2019 08:18 CET | Update | - |
| article html file updated | 29 September 2016 09:43 CEST | Update | - |
| article html file updated | 23 June 2016 08:46 CEST | Original file | - |
| article xml uploaded. | 23 June 2016 08:44 CEST | Original file | https://www.mdpi.com/2227-9091/4/3/18/xml |
| article pdf uploaded. | 23 June 2016 08:44 CEST | Version of Record | https://www.mdpi.com/2227-9091/4/3/18/pdf |
