| article html file updated | 7 February 2020 19:51 CET | Update | https://www.mdpi.com/2305-6320/3/4/33 |
| article html file updated | 4 May 2019 18:44 CEST | Update | - |
| article html file updated | 17 December 2016 10:14 CET | Original file | - |
| article xml uploaded. | 17 December 2016 10:13 CET | Update | https://www.mdpi.com/2305-6320/3/4/33/xml |
| article xml uploaded. | 17 December 2016 10:13 CET | Original file | - |
| article pdf uploaded. | 17 December 2016 08:35 CET | Version of Record | https://www.mdpi.com/2305-6320/3/4/33/pdf |
