| article html file updated | 7 February 2020 09:56 CET | Update | https://www.mdpi.com/2227-9032/4/2/32 |
| article html file updated | 5 May 2019 13:24 CEST | Update | N/A |
| article html file updated | 27 March 2019 07:03 CET | Update | N/A |
| article html file updated | 1 July 2016 10:23 CEST | Update | N/A |
| article html file updated | 8 June 2016 15:48 CEST | Original file | N/A |
| article xml uploaded. | 8 June 2016 15:46 CEST | Original file | https://www.mdpi.com/2227-9032/4/2/32/xml |
| article pdf uploaded. | 8 June 2016 15:46 CEST | Version of Record | https://www.mdpi.com/2227-9032/4/2/32/pdf |
