| article html file updated | 8 February 2020 04:40 CET | Update | https://www.mdpi.com/2218-0532/85/2/21 |
| article html file updated | 4 May 2019 00:14 CEST | Update | N/A |
| article html file updated | 29 June 2017 11:50 CEST | Update | N/A |
| article html file updated | 9 May 2017 09:20 CEST | Original file | N/A |
| article xml uploaded. | 9 May 2017 09:18 CEST | Original file | https://www.mdpi.com/2218-0532/85/2/21/xml |
| article pdf uploaded. | 9 May 2017 09:18 CEST | Updated version of record | https://www.mdpi.com/2218-0532/85/2/21/pdf |
| article pdf uploaded. | 28 April 2017 15:31 CEST | Version of Record | https://www.mdpi.com/2218-0532/85/2/21/pdf-vor |
