| article html file updated | 7 February 2020 14:03 CET | Update | https://www.mdpi.com/2313-4321/1/2/254 |
| article html file updated | 5 May 2019 05:47 CEST | Update | - |
| article html file updated | 27 March 2019 15:10 CET | Update | - |
| article html file updated | 29 August 2016 16:03 CEST | Original file | - |
| article xml uploaded. | 29 August 2016 16:02 CEST | Original file | https://www.mdpi.com/2313-4321/1/2/254/xml |
| article pdf uploaded. | 29 August 2016 16:02 CEST | Version of Record | https://www.mdpi.com/2313-4321/1/2/254/pdf |
