| article html file updated | 8 February 2020 04:27 CET | Update | https://www.mdpi.com/2227-9032/5/2/22 |
| article html file updated | 24 September 2019 12:40 CEST | Update | N/A |
| article html file updated | 4 May 2019 00:37 CEST | Update | N/A |
| article html file updated | 30 June 2017 05:39 CEST | Update | N/A |
| article html file updated | 26 April 2017 15:07 CEST | Original file | N/A |
| article xml uploaded. | 26 April 2017 15:06 CEST | Original file | https://www.mdpi.com/2227-9032/5/2/22/xml |
| article pdf uploaded. | 26 April 2017 15:06 CEST | Version of Record | https://www.mdpi.com/2227-9032/5/2/22/pdf |
