| article html file updated | 8 February 2020 02:20 CET | Update | https://www.mdpi.com/2078-2489/8/2/40 |
| article html file updated | 24 September 2019 00:45 CEST | Update | - |
| article html file updated | 4 May 2019 04:50 CEST | Update | - |
| article html file updated | 28 June 2017 13:46 CEST | Update | - |
| article html file updated | 28 March 2017 10:00 CEST | Original file | - |
| article xml uploaded. | 28 March 2017 09:58 CEST | Original file | https://www.mdpi.com/2078-2489/8/2/40/xml |
| article pdf uploaded. | 28 March 2017 09:58 CEST | Updated version of record | https://www.mdpi.com/2078-2489/8/2/40/pdf |
| article pdf uploaded. | 27 March 2017 12:55 CEST | Version of Record | https://www.mdpi.com/2078-2489/8/2/40/pdf-vor |
