2014. Incomplete (rq-q+r- ɛ , r)-arcs and minimal {ℓ,t}-Blocking set in PG(2,q). AL-Rafidain Journal of Computer Sciences and Mathematics. 11, 1 (Jun. 2014), 43–60. DOI:https://doi.org/10.33899/csmj.2014.163738 .