@misc{Nguyen_Van_Khue_Two_1981,
 author={Nguyen, Van Khue and Nguyen, To Nhu},
 volume={29},
 editor={Polska Akademia Nauk},
 editor={Państwowe Wydawnictwo Naukowe (1951–1992)},
 number={5-6},
 copyright={Rights Reserved - Restricted Access},
 address={Varsovie},
 howpublished={online},
 year={1981},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 type={Text},
 title={Two extensors of metrics},
}