| article html file updated | 7 February 2020 21:12 CET | Update | https://www.mdpi.com/2227-9032/5/1/2 |
| article html file updated | 22 September 2019 19:58 CEST | Update | N/A |
| article html file updated | 4 May 2019 15:54 CEST | Update | N/A |
| article html file updated | 30 March 2017 11:32 CEST | Update | N/A |
| article html file updated | 11 January 2017 14:13 CET | Original file | N/A |
| article xml uploaded. | 11 January 2017 14:12 CET | Original file | https://www.mdpi.com/2227-9032/5/1/2/xml |
| article pdf uploaded. | 11 January 2017 14:12 CET | Version of Record | https://www.mdpi.com/2227-9032/5/1/2/pdf |
