| article html file updated | 8 February 2020 07:16 CET | Update | https://www.mdpi.com/2076-3271/5/2/12 |
| article html file updated | 25 September 2019 03:10 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:22 CEST | Update | N/A |
| article html file updated | 7 June 2017 02:47 CEST | Original file | N/A |
| article xml uploaded. | 7 June 2017 02:46 CEST | Original file | https://www.mdpi.com/2076-3271/5/2/12/xml |
| article pdf uploaded. | 7 June 2017 02:46 CEST | Updated version of record | https://www.mdpi.com/2076-3271/5/2/12/pdf |
| article pdf uploaded. | 2 June 2017 10:02 CEST | Version of Record | https://www.mdpi.com/2076-3271/5/2/12/pdf-vor |
