| article html file updated | 8 February 2020 11:51 CET | Update | https://www.mdpi.com/2076-0787/6/3/52 |
| article html file updated | 3 May 2019 10:40 CEST | Update | N/A |
| article html file updated | 27 March 2019 17:23 CET | Update | N/A |
| article pdf uploaded. | 26 July 2017 12:25 CEST | Updated version of record | https://www.mdpi.com/2076-0787/6/3/52/pdf |
| article html file updated | 24 July 2017 16:40 CEST | Original file | N/A |
| article xml uploaded. | 24 July 2017 16:39 CEST | Original file | https://www.mdpi.com/2076-0787/6/3/52/xml |
| article pdf uploaded. | 24 July 2017 16:39 CEST | Updated version of record | https://www.mdpi.com/2076-0787/6/3/52/pdf-vor |
| article pdf uploaded. | 24 July 2017 12:46 CEST | Version of Record | https://www.mdpi.com/2076-0787/6/3/52/pdf-vor |
