| article html file updated | 7 February 2020 14:53 CET | Update | https://www.mdpi.com/2227-7390/4/3/55 |
| article html file updated | 22 September 2019 00:53 CEST | Update | N/A |
| article html file updated | 5 May 2019 04:17 CEST | Update | N/A |
| article html file updated | 28 September 2016 11:31 CEST | Update | N/A |
| article html file updated | 13 September 2016 03:53 CEST | Original file | N/A |
| article xml uploaded. | 13 September 2016 03:51 CEST | Original file | https://www.mdpi.com/2227-7390/4/3/55/xml |
| article pdf uploaded. | 13 September 2016 03:51 CEST | Version of Record | https://www.mdpi.com/2227-7390/4/3/55/pdf |
