It is widely reported that Kang Youwei and Liang Qichao bear the principal responsibility for the negative image of Dowager Cixi as the reactionary who halted the 1898 reform. As far as Liang is concerned, I believe to have found a good sample of his views in the form of his work «戊戌政變記».
Which works of Kang Youwei contain strong criticism of the Empress Dowager, especially as anti-reform minded?. As I am not in China, works available online would be the most practical. I have tried to spot such titles in works about Kang, and found this article, but I just don’t seem to be able to gain access.