Correction: Calcolo (2023) 60:27 https://doi.org/10.1007/s10092-023-00517-5


In this article the affiliation details for affiliation 3 were incorrectly given as 'INdAM Research Group GNCS, Verona, Italy' but should have been 'INdAM Research Group GNCS, Rome, Italy'.


The original article has been corrected.