| article html file updated | 7 February 2020 03:51 CET | Update | https://www.mdpi.com/2076-3417/6/2/32 |
| article html file updated | 6 May 2019 01:47 CEST | Update | - |
| article html file updated | 26 March 2019 19:17 CET | Original file | - |
| article pdf uploaded. | 25 January 2016 11:21 CET | Version of Record | https://www.mdpi.com/2076-3417/6/2/32/pdf |
| article xml uploaded. | 25 January 2016 11:21 CET | Original file | https://www.mdpi.com/2076-3417/6/2/32/xml |
