Minimum size blocking sets of certain line sets with respect to an elliptic quadric in PG(3, q)

For a given nonempty subset G of the line set of PG(3, q), a set X of points of PG(3, q) is called an f-blocking set if each line in contains at least one point of X. Consider an elliptic quadric Q(-) (3, q) in PG(3, q). Let epsilon (respectively, T, S) denote the set of all lines of PG(3, q) which meet Q(-) (3, q) in 0 (respectively, 1, 2) points. In this paper, we characterize the minimum size f-blocking sets in PG(3, q), where G is one of the line sets S, epsilon boolean OR S, and T boolean OR S