The paper presents a comprehensive critical review and detailed analysis of the literature, published in the field of the phase diagram solution Li-LiH (LiD, LiT). Special attention is paid to the completeness of the source information on the paper's topic resulting in an extended reference list. Particularly, paper reviews rarely used sources including littleknown publications from research centers, proceedings of the international scientific meetings and dissertations. These publications were more thoroughly analyzed in order to make the information available to the scientific society.