Yatsu, Satoshi: Hagiwara Sakutaro "Tsukini Hoeru" to senso :Nichiro senso Taigyaku jiken sekaisenso to "Tsukini Hoeru" ki no Sakutaro ("Hagiwara Sakutaro's howling at the moon and war. The Russo-Japanese War. The high treason incident of 1910. World war and Sakutaro during the period of howling at the moon"), in: Modern Japanese Literary Studies 98, 2018, pp. 146-161.