On a redius of a pedal triangle' scircumcircle and conic sections Katsuhiro Yokota 76 On the...
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On a redius of a pedal triangle' scircumcircle and conic sections Katsuhiro Yokota 76 On the papers in No.65 of Shotoh Sugaku Katsuhiro Yokota 81 A theorem on the sum of squares of