| article html file updated | 6 February 2020 19:20 CET | Update | https://www.mdpi.com/2227-9091/3/2/164 |
| article html file updated | 6 May 2019 18:31 CEST | Update | - |
| article html file updated | 26 March 2019 04:05 CET | Update | - |
| article html file updated | 22 October 2015 10:24 CEST | Update | - |
| article xml file uploaded | 22 October 2015 10:24 CEST | Original file | https://www.mdpi.com/2227-9091/3/2/164/xml |
| article html file updated | 21 August 2015 13:08 CEST | Original file | - |
| article pdf uploaded. | 3 June 2015 13:25 CEST | Version of Record | https://www.mdpi.com/2227-9091/3/2/164/pdf |
