| article html file updated | 8 February 2020 09:03 CET | Update | https://www.mdpi.com/2306-5354/4/3/60 |
| article html file updated | 25 September 2019 12:29 CEST | Update | - |
| article html file updated | 3 May 2019 16:00 CEST | Update | - |
| article html file updated | 30 September 2017 07:41 CEST | Update | - |
| article html file updated | 23 June 2017 10:24 CEST | Original file | - |
| article xml uploaded. | 23 June 2017 10:23 CEST | Original file | https://www.mdpi.com/2306-5354/4/3/60/xml |
| article pdf uploaded. | 23 June 2017 10:23 CEST | Version of Record | https://www.mdpi.com/2306-5354/4/3/60/pdf |
