| article html file updated | 8 February 2020 08:39 CET | Update | https://www.mdpi.com/2305-6320/4/2/42 |
| article html file updated | 25 September 2019 10:19 CEST | Update | - |
| article html file updated | 3 May 2019 16:47 CEST | Update | - |
| article html file updated | 18 June 2017 22:34 CEST | Original file | - |
| article xml uploaded. | 18 June 2017 13:22 CEST | Original file | https://www.mdpi.com/2305-6320/4/2/42/xml |
| article pdf uploaded. | 18 June 2017 13:22 CEST | Version of Record | https://www.mdpi.com/2305-6320/4/2/42/pdf |
