The methods of neutrino spectra calculations with GEANT library and the peculiarities of such calculations for different neutrino beams are summarized. The formula expressing K0 yields from a neutrino target through the K+ and K− yields from the same target is proposed
@article{arxiv.hep-ex/0106035,
title = {Calculations of neutrino spectra with a program based on the GEANT library},
author = {M. Kirsanov},
journal= {arXiv preprint arXiv:hep-ex/0106035},
year = {2007}
}