@article{10_4064_ap85_1_4,
     author = {Satoshi Tanaka and Norio Yoshida},
     title = {Forced oscillation of certain hyperbolic equations
 with continuous distributed deviating arguments},
     journal = {Annales Polonici Mathematici},
     pages = {37--54},
     publisher = {mathdoc},
     volume = {85},
     number = {1},
     year = {2005},
     doi = {10.4064/ap85-1-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap85-1-4/}
}