| article html file updated | 8 February 2020 15:47 CET | Update | https://www.mdpi.com/2223-7747/6/3/37 |
| article html file updated | 27 September 2019 01:15 CEST | Update | N/A |
| article html file updated | 3 May 2019 02:44 CEST | Update | N/A |
| article html file updated | 30 September 2017 14:26 CEST | Update | N/A |
| article html file updated | 9 September 2017 13:08 CEST | Original file | N/A |
| article xml uploaded. | 9 September 2017 13:07 CEST | Original file | https://www.mdpi.com/2223-7747/6/3/37/xml |
| article pdf uploaded. | 9 September 2017 13:07 CEST | Version of Record | https://www.mdpi.com/2223-7747/6/3/37/pdf |
