| article html file updated | 8 February 2020 01:25 CET | Update | https://www.mdpi.com/2309-608X/3/1/15 |
| article html file updated | 23 September 2019 19:33 CEST | Update | - |
| article html file updated | 4 May 2019 06:50 CEST | Update | - |
| article html file updated | 11 December 2018 09:17 CET | Update | - |
| article html file updated | 14 March 2017 10:32 CET | Original file | - |
| article xml uploaded. | 14 March 2017 10:31 CET | Update | https://www.mdpi.com/2309-608X/3/1/15/xml |
| article pdf uploaded. | 14 March 2017 10:31 CET | Version of Record | https://www.mdpi.com/2309-608X/3/1/15/pdf |
