Bhavale, D.A., Parate, P.A., Tupte, P.H. and Shirsath, S.V. 2025. Hasse diagrams of basic blocks containing four comparable reducible elements and having nullity four. International Journal Of Mathematics And Computer Research. 13, 4 (Apr. 2025), 5099-5106. DOI:https://doi.org/10.47191/ijmcr/v13i4.12.