@article{10_4064_aa127_2_7,
     author = {Humio Ichimura and Hiroki Sumida-Takahashi},
     title = {Imaginary quadratic fields satisfying
 the {Hilbert{\textendash}Speiser} type condition for a small prime $p$},
     journal = {Acta Arithmetica},
     pages = {179--191},
     publisher = {mathdoc},
     volume = {127},
     number = {2},
     year = {2007},
     doi = {10.4064/aa127-2-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa127-2-7/}
}