| article html file updated | 7 February 2020 11:00 CET | Update | https://www.mdpi.com/2227-9032/4/3/37 |
| article html file updated | 5 May 2019 11:24 CEST | Update | - |
| article html file updated | 27 March 2019 08:59 CET | Update | - |
| article html file updated | 29 September 2016 12:13 CEST | Update | - |
| article html file updated | 30 June 2016 08:39 CEST | Original file | - |
| article xml uploaded. | 30 June 2016 08:38 CEST | Original file | https://www.mdpi.com/2227-9032/4/3/37/xml |
| article pdf uploaded. | 30 June 2016 08:38 CEST | Version of Record | https://www.mdpi.com/2227-9032/4/3/37/pdf |
