Growth of $(\alpha ,\beta ,\gamma )$-order solutions of linear differential equations with entire coefficients

The main aim of this paper is to study the growth of solutions of higher order linear differential equations using the concepts of $(\alpha ,\beta ,\gamma )$-order and $(\alpha ,\beta ,\gamma )$-type. We obtain some results which improve and generalize some previous results of Kinnunen \cite{13}, Long et al. \cite{L} as well as Belaïdi \cite{b3}, \cite{b5}.