The class of functions spirallike with respect to a boundary point. - Adam Lecko (Int. J. Math. Math. Sci., 2004)

Differential Subordinations of Arithmetic and Geometric Means of Some Functionals Related to a Sector. - Adam Lecko; Millenia Lecko (Int. J. Math. Math. Sci., 2011)

On Certain Differential Subordination of Harmonic Mean Related to a Linear Function. - Anna Dobosz; Piotr Jastrzebski; Adam Lecko (Symmetry, 2021)

On a Class of Analytic Functions Related to Robertson's Formula Involving Crescent Shaped Domain and Lemniscate of Bernoulli. - Lech Gruszecki; Adam Lecko; Gangadharan Murugusundaramoorthy; Srikandan Sivasubramanian (Symmetry, 2023)