@article{Nie:2023,
author
=
"K.Nie and Y.Ma and E.Sidorowicz",
title
=
"(Strong) Proper vertex connection of some digraphs",
journal
=
"Applied Mathematics and Computation",
volume
=
"Vol. 458",
number
=
"art. no. 128243",
pages
=
"1--12",
year
=
"2023",
}