| article html file updated | 6 February 2020 11:12 CET | Update | https://www.mdpi.com/2227-9059/2/3/211 |
| article html file updated | 21 March 2019 22:19 CET | Update | - |
| article html file updated | 23 February 2017 02:22 CET | Update | - |
| article html file updated | 20 August 2015 14:25 CEST | Update | - |
| article html file updated | 5 August 2014 11:59 CEST | Original file | - |
| article xml file uploaded | 5 August 2014 11:59 CEST | Original file | https://www.mdpi.com/2227-9059/2/3/211/xml |
| article pdf uploaded. | 4 August 2014 13:57 CEST | Version of Record | https://www.mdpi.com/2227-9059/2/3/211/pdf |
