The concept of an order-theoretical tree is generalized to the notion of a multitree. The comparability graphs of multitrees are characterized and studied with respect to minimal path coverings. © 1978.
Jung, H. A. (1978). On a class of posets and the corresponding comparability graphs. Journal of Combinatorial Theory, Series B, 24(2), 125–133. https://doi.org/10.1016/0095-8956(78)90013-8