  To reconcile the two experimental findings on La_{2-x}Sr_{x}CuO_4, namely,
Fermi surface (FS) observed by angle-resolved photoemission spectroscopy and
sharp incommensurate magnetic peaks by neutron scattering, we propose a picture
that a quasi-one-dimensional FS (q-1dFS) is realized in each CuO_{2} plane
whose q-1d direction alternates along the c-axis.
