@article{00645199,
title = {A self-adjoint ``simultaneous crossing of the axis''.},
journal = {Georgian Mathematical Journal},
volume = {1},
year = {1994},
pages = {173-181},
doi = {10.1007/BF02254730},
zbl = {0830.35071},
language = {en},
url = {http://dml.mathdoc.fr/item/00645199}
}
Kreith, Kurt. A self-adjoint “simultaneous crossing of the axis”.. Georgian Mathematical Journal, Tome 1 (1994) pp. 173-181. doi : 10.1007/BF02254730. http://gdmltest.u-ga.fr/item/00645199/