On Bipartite Q-Polynomial Distance-Regular Graphs with c2 ≤ 2. - Stefko Miklavic; Safet Penjic (Electron. J. Comb., 2014)

On the Terwilliger algebra of bipartite distance-regular graphs with Δ2=0 and c2=2. - Safet Penjic (Discret. Math., 2017)

On the Terwilliger algebra of certain family of bipartite distance-regular graphs with Δ_2 = 0. - Stefko Miklavic; Safet Penjic (Art Discret. Appl. Math., 2020)

On a version of the spectral excess theorem. - Miguel Angel Fiol; Safet Penjic (Electron. J. Graph Theory Appl., 2020)

A combinatorial basis for Terwilliger algebra modules of a bipartite distance-regular graph. - Mark S. MacLean; Safet Penjic (Discret. Math., 2021)

On Bounding the Diameter of a Distance-Regular Graph. - Arnold Neumaier; Safet Penjic (Comb., 2022)

A unified view of inequalities for distance-regular graphs, part I. - Arnold Neumaier; Safet Penjic (J. Comb. Theory B, 2022)

On the combinatorial structure and algebraic characterizations of distance-regular digraphs. - Giusy Monzillo; Safet Penjic (Discret. Math., 2025)