"Biograficheskiĭ slovarʹ russkikh filosofov"--Tom 3, pages 488-639.

Until quite recently, Russian philosophy was studied mainly from the standpoint of its development "along the path to Marxism." Understandably, attention was mainly devoted to "the solid materialist tradition," which overshadowed all other currents of Russian thought. However, the question arises of whether this "materialist tradition," i.e., the philosophy of the Russian revolutionary democrats, is so consonant with Marxism. One need only examine the facts to persuade oneself of the untenability of such an assumption.

Ch. 1. Problemy metodologii issledovanii︠a︡ nravstvennogo ideala russkoĭ filosofii -- ch. 2. Personalia. Nravstvennye iskanii︠a︡ russkikh mysliteleĭ.