| article html file updated | 7 February 2020 02:06 CET | Update | https://www.mdpi.com/2078-2489/6/4/848 |
| article html file updated | 6 May 2019 05:15 CEST | Update | - |
| article html file updated | 26 March 2019 16:16 CET | Original file | - |
| article pdf uploaded. | 11 December 2015 14:08 CET | Version of Record | https://www.mdpi.com/2078-2489/6/4/848/pdf |
| article xml uploaded. | 11 December 2015 14:08 CET | Original file | https://www.mdpi.com/2078-2489/6/4/848/xml |
