| article html file updated | 8 February 2020 00:17 CET | Update | https://www.mdpi.com/2306-5354/4/1/18 |
| article html file updated | 23 September 2019 13:00 CEST | Update | - |
| article html file updated | 4 May 2019 09:23 CEST | Update | - |
| article html file updated | 29 March 2017 06:10 CEST | Update | - |
| article html file updated | 25 February 2017 11:35 CET | Original file | - |
| article xml uploaded. | 25 February 2017 11:34 CET | Original file | https://www.mdpi.com/2306-5354/4/1/18/xml |
| article pdf uploaded. | 25 February 2017 11:34 CET | Version of Record | https://www.mdpi.com/2306-5354/4/1/18/pdf |
