| article html file updated | 8 February 2020 06:39 CET | Update | https://www.mdpi.com/2218-6581/6/2/13 |
| article html file updated | 25 September 2019 00:04 CEST | Update | N/A |
| article html file updated | 3 May 2019 20:30 CEST | Update | N/A |
| article html file updated | 29 June 2017 12:25 CEST | Update | N/A |
| article html file updated | 26 May 2017 04:31 CEST | Original file | N/A |
| article xml uploaded. | 26 May 2017 04:30 CEST | Update | https://www.mdpi.com/2218-6581/6/2/13/xml |
| article pdf uploaded. | 26 May 2017 04:30 CEST | Updated version of record | https://www.mdpi.com/2218-6581/6/2/13/pdf |
| article pdf uploaded. | 24 May 2017 16:13 CEST | Version of Record | https://www.mdpi.com/2218-6581/6/2/13/pdf-vor |
