A note involving p-valently Bazilević functions. - Hüseyin Irmak; Krzysztof Piejko; Jan Stankiewicz (Int. J. Math. Math. Sci., 2005)

On the Dziok-Srivastava operator under multivalent analytic functions. - Krzysztof Piejko; Janusz Sokól (Appl. Math. Comput., 2006)

Generalized convolutions and classes of functions defined by subordination. - Krzysztof Piejko (Comput. Math. Appl., 2009)

On the convolution and subordination of convex functions. - Krzysztof Piejko; Janusz Sokól (Appl. Math. Lett., 2012)

(k, αn-1)-Fibonacci numbers and Pk-matchings in multigraphs. - Urszula Bednarz; Dorota Bród; Krzysztof Piejko; Andrzej Wloch (Ars Comb., 2013)

Distance Fibonacci numbers, distance Lucas numbers and their applications. - Dorota Bród; Krzysztof Piejko; Iwona Wloch (Ars Comb., 2013)

On k-Distance Pell Numbers in 3-Edge-Coloured Graphs. - Krzysztof Piejko; Iwona Wloch (J. Appl. Math., 2014)

Extremal Trees with respect to Number of (A, B, 2C)-Edge Colourings. - Krzysztof Piejko (J. Appl. Math., 2015)

On the number of (A, B, 2C)-edge colourings in graphs. - Krzysztof Piejko (Ars Comb., 2018)

On k-distance Pell numbers and ((k-1)A, (k-1)B, kC)-edge coloured graphs. - Krzysztof Piejko (Ars Comb., 2018)

On (A, 2B, 2C)-edge colouring in certain class of graphs. - Krzysztof Piejko; Lucyna Trojnar-Spelina (Ars Comb., 2018)