Topological indices of some nanotubes and composite graphs |

Topological indices of nanotubes and rooted product of graphs |

Groups with combinatorial conditions on subsets |

Counting centralizers in finite groups |

Groups with many permutable products |

Groups in which some equations have many solutions |

A combinatorial problem in variety of groups |

On a question of Paul Erdos |

Some combinatorial conditions on groups |

On a problems arising from a question of Paul Erdos |