| article html file updated | 7 February 2020 09:30 CET | Update | https://www.mdpi.com/2306-5338/3/2/21 |
| article html file updated | 5 May 2019 14:12 CEST | Update | - |
| article html file updated | 27 March 2019 06:11 CET | Update | - |
| article html file updated | 31 May 2016 08:37 CEST | Original file | - |
| article xml uploaded. | 31 May 2016 08:35 CEST | Original file | https://www.mdpi.com/2306-5338/3/2/21/xml |
| article pdf uploaded. | 31 May 2016 08:35 CEST | Version of Record | https://www.mdpi.com/2306-5338/3/2/21/pdf |
