Abstract
The issue on hand consists of the second part of papers devoted in honour of the 75th birthday of Jean-Claude Tabet, and I am sure you will find interesting and inspiring contributions in this second part.
François Fenaille, our French editor, has put these special issues together with great care. As editor-in-chief of European Journal of Mass Spectrometry, I wish to express my gratitude for his work inviting the contributors and getting the manuscripts in time to these issues 2019.