| article html file updated | 8 February 2020 15:56 CET | Update | https://www.mdpi.com/2076-0752/6/3/13 |
| article html file updated | 3 May 2019 02:26 CEST | Update | N/A |
| article html file updated | 30 September 2017 11:50 CEST | Update | N/A |
| article html file updated | 12 September 2017 11:22 CEST | Original file | N/A |
| article xml uploaded. | 12 September 2017 11:20 CEST | Update | https://www.mdpi.com/2076-0752/6/3/13/xml |
| article xml uploaded. | 12 September 2017 11:20 CEST | Original file | N/A |
| article pdf uploaded. | 12 September 2017 11:20 CEST | Version of Record | https://www.mdpi.com/2076-0752/6/3/13/pdf |
