Cite
APA Citation
Rana Rana, A. A., Pal Pal, A. A., & Pal Pal, M. M. (2011). an Efficient Algorithm to Solve the Conditional Covering Problem on Trapezoid Graphs. ISRN discrete mathematics, 2011, . http://access.bl.uk/ark:/81055/vdc_100169169127.0x000011