| article html file updated | 8 February 2020 07:23 CET | Update | https://www.mdpi.com/2076-0787/6/2/37 |
| article html file updated | 3 May 2019 19:08 CEST | Update | N/A |
| article html file updated | 13 June 2017 05:45 CEST | Original file | N/A |
| article xml uploaded. | 13 June 2017 05:44 CEST | Original file | https://www.mdpi.com/2076-0787/6/2/37/xml |
| article pdf uploaded. | 13 June 2017 05:44 CEST | Updated version of record | https://www.mdpi.com/2076-0787/6/2/37/pdf |
| article pdf uploaded. | 3 June 2017 11:00 CEST | Version of Record | https://www.mdpi.com/2076-0787/6/2/37/pdf-vor |
