A method for optimal calculation of total transmission ratio of two step helical gearboxes V Ngoc Pi Procedings of the National Conference on Engineering Mechanics, 2001 | 36 | 2001 |

A new study on optimal calculation of partial transmission ratio of three-step helical reducers VN Pi The 3rd IASME/WSEAS international conference on continuum mechanics …, 2008 | 28 | 2008 |

Phan Quang The, Optimal calculation of total transmission ratio of three-step helical gearboxes for minimum mass of gears VN Pi, ND Binh, VQ Dac Journal of Science and Technology of 6 Engineering Universities 55, 91-93, 2006 | 27 | 2006 |

Optimum determination of partial transmission ratios of three-step helical gearboxes for getting minimum cross section dimension VN Pi, NK Tuan Journal of Environmental Science and Engineering A 5, 570-573, 2016 | 26 | 2016 |

Optimum calculation of partial transmission ratios of mechanical driven systems using a V-belt and two-step bevel helical gearbox VN Pi, NTH Cam, NK Tuan J. Environ. Sci. Eng. A 5, 566, 2016 | 25 | 2016 |

A new study on optimum determination of partial transmission ratios of mechanical driven systems using a V-belt and two-step helical gearbox VN Pi, TTP Thao, LTP Thao Vietnam Mech. Eng. J 10, 123, 2015 | 22 | 2015 |

Optimal determination of partial transmission ratios for four-step helical gearboxes with first and third step double gear-sets for minimal mass of gears VN Pi a a 2, 2, 2008 | 22 | 2008 |

Optimum determination of partial transmission ratios of mechanical driven systems using a chain drive and two-step helical gearbox VN Pi, TTP Thao, DA Tuan J. Environ. Sci. Eng. B 6, 80, 2017 | 21 | 2017 |

Cost optimization of internal grinding VN Pi, LX Hung, LA Tung, BT Long J. Mater. Sci. Eng. B 6, 291-296, 2016 | 20 | 2016 |

Optimal calculation of partial transmission ratios of four-step helical gearboxes with second and fourth-step double gear-sets for minimal mass of gears LX Hung, VN Pi, NV Du The International Symposium on Mechanical Engineering, ISME, Ho Chi Minh …, 2009 | 19 | 2009 |

A new and effective method for optimal calculation of total transmission ratio of two step bevel-helical gearboxes MV Ngoc Pi Proceedings of the International Colloquium on Mechannics of Solids, Fluids …, 2000 | 19 | 2000 |

Experimental determination of optimum exchanged diameter in surface grinding process VN Pi, LA Tung, LX Hung, NV Ngoc J. Environ. Sci. Eng. A 6, 85-89, 2017 | 17 | 2017 |

A new study on optimal calculation of partial transmission ratios of three-step helical reducers for getting minimal cross section dimension VN Pi The 2nd WSEAS International Conference on Computer Engineering and …, 2008 | 17 | 2008 |

Determining optimal partial transmission ratios of mechanical driven systems using a V-belt drive and a helical reducer with second-step double gear-sets NTH Cam, VN Pi, NK Tuan, LX Hung, TTP Thao International Conference on Engineering Research and Applications, 261-269, 2018 | 15 | 2018 |

Performance enhancement of abrasive waterjet cutting VN Pi | 15 | 2008 |

Optimal calculation of partial transmission ratios of worm-helical gear reducers for minimal gearbox length VN Pi, VQ Dac J. Sci. Technol. Tech. Univ 61, 73-77, 2007 | 15 | 2007 |

Calculation of total transmission ratio of two step worm reducers for the best reasonable gearbox housing structure VN Pi, VQ Dac J. Sci. Technol. Thai Nguyen Univ 1 (41), 65-69, 2007 | 14 | 2007 |

Optimal calculation of partial transmission ratios for four-step helical gearboxes with first and third-step double gear-sets for minimal gearbox length VN Pi American Conference on Applied Mathematics (MATH 2008), Harvard …, 2008 | 13 | 2008 |

A study on determination of optimum parameters for lubrication in external cylindrical grinding base on Taguchi method XT Hoang, VN Pi, G Jun Key Engineering Materials 796, 97-102, 2019 | 11 | 2019 |

Determining optimal gear ratios of a two-stage helical reducer for getting minimal acreage of cross section NK Tuan, VN Pi, NTH Cam, TTP Thao, HK Thanh, LX Hung, HT Tham MATEC Web of Conferences 213, 01008, 2018 | 11 | 2018 |