Letter to the Editor in response to FSI 314 (2020) 110388

Affiliations

• ¹ School of Mathematics and Maxwell Institute, University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD, UK. Electronic address: c.g.g.aitken@ed.ac.uk.
• ² School of Mathematics and Maxwell Institute, University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD, UK.
• ³ Department of Forensic Science, Sam Houston State University, Huntsville, TX, USA.
• ⁴ Institute of Forensic Research, Krakow, Poland; Institute of Chemistry, The University of Silesia in Katowice, Katowice, Poland.
• ⁵ School of Criminal Justice, University of Lausanne, Switzerland.