| article html file updated | 7 February 2020 04:00 CET | Update | https://www.mdpi.com/2306-5354/3/1/8 |
| article html file updated | 6 May 2019 01:30 CEST | Update | N/A |
| article html file updated | 26 March 2019 19:34 CET | Update | N/A |
| article html file updated | 8 June 2016 06:11 CEST | Original file | N/A |
| article pdf uploaded. | 29 January 2016 11:16 CET | Version of Record | https://www.mdpi.com/2306-5354/3/1/8/pdf |
| article xml uploaded. | 29 January 2016 11:16 CET | Original file | https://www.mdpi.com/2306-5354/3/1/8/xml |
