| article html file updated | 8 February 2020 02:13 CET | Update | https://www.mdpi.com/2227-9717/5/2/15 |
| article html file updated | 4 May 2019 05:06 CEST | Update | - |
| article html file updated | 29 June 2017 12:47 CEST | Update | - |
| article html file updated | 28 March 2017 04:14 CEST | Original file | - |
| article xml uploaded. | 28 March 2017 04:13 CEST | Original file | https://www.mdpi.com/2227-9717/5/2/15/xml |
| article pdf uploaded. | 28 March 2017 04:13 CEST | Updated version of record | https://www.mdpi.com/2227-9717/5/2/15/pdf |
| article pdf uploaded. | 24 March 2017 14:19 CET | Version of Record | https://www.mdpi.com/2227-9717/5/2/15/pdf-vor |
