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The journal Molecular Physics has published a special Festschrift titled "Molecules (Always) in Motion" to honor Professor Attila G. Császár, a leading figure in molecular spectroscopy and quantum chemistry. This prestigious collection celebrates his decades of groundbreaking work in developing theoretical and computational methods for solving molecular rovibrational problems.

The foreword to the Festschrift highlights Professor Császár’s critical contributions, particularly his leadership of the European COST Network MOLIM (Molecules in Motion) between 2015 and 2019. Under his direction, the initiative significantly advanced quantum nuclear motion theory and fostered a collaborative international community of researchers.

Recognized globally for his deep insight and methodological innovation, Professor Császár's work continues to influence a wide range of studies in molecular physics and computational chemistry. The publication not only underscores his scientific impact but also his role as a mentor and thought leader in the field.