| article html file updated | 7 February 2020 14:59 CET | Update | https://www.mdpi.com/2076-3271/4/3/15 |
| article html file updated | 5 May 2019 04:05 CEST | Update | N/A |
| article html file updated | 14 September 2016 11:40 CEST | Original file | N/A |
| article xml uploaded. | 14 September 2016 11:39 CEST | Original file | https://www.mdpi.com/2076-3271/4/3/15/xml |
| article pdf uploaded. | 14 September 2016 11:39 CEST | Version of Record | https://www.mdpi.com/2076-3271/4/3/15/pdf |
