| article html file updated | 7 February 2020 10:17 CET | Update | https://www.mdpi.com/2227-9032/4/2/34 |
| article html file updated | 21 September 2019 19:10 CEST | Update | - |
| article html file updated | 5 May 2019 12:44 CEST | Update | - |
| article html file updated | 27 March 2019 07:42 CET | Update | - |
| article html file updated | 1 July 2016 10:25 CEST | Update | - |
| article html file updated | 16 June 2016 12:58 CEST | Original file | - |
| article xml uploaded. | 16 June 2016 12:57 CEST | Original file | https://www.mdpi.com/2227-9032/4/2/34/xml |
| article pdf uploaded. | 16 June 2016 12:57 CEST | Version of Record | https://www.mdpi.com/2227-9032/4/2/34/pdf |
