| article html file updated | 8 February 2020 03:45 CET | Update | https://www.mdpi.com/2078-2489/8/2/44 |
| article html file updated | 24 September 2019 08:41 CEST | Update | - |
| article html file updated | 4 May 2019 01:54 CEST | Update | - |
| article html file updated | 28 June 2017 13:47 CEST | Update | - |
| article html file updated | 17 April 2017 13:43 CEST | Original file | - |
| article xml uploaded. | 17 April 2017 13:42 CEST | Original file | https://www.mdpi.com/2078-2489/8/2/44/xml |
| article pdf uploaded. | 17 April 2017 13:42 CEST | Version of Record | https://www.mdpi.com/2078-2489/8/2/44/pdf |
