@article{MZ_1989__202_1_174075,
     author = {Yoshihiro Shibata and Gen Nakamura},
     title = {On a {Local} {Existence} {Theorem} of {Neumann} {Problem} for {Some} {Quasilinear} {Hyperbolic} {Systems} of 2nd {Order.}},
     journal = {Mathematische Zeitschrift},
     pages = {1--64},
     publisher = {mathdoc},
     volume = {202},
     number = {1},
     year = {1989},
     zbl = {0652.35077},
     url = {http://geodesic.mathdoc.fr/item/MZ_1989__202_1_174075/}
}