@misc{Sielanko_Juliusz_(1938-_)._Phase,
 author={Sielanko, Juliusz (1938- ). and Sowa, Marek (1944- ).},
 howpublished={online},
 publisher={UMCS},
 language={eng},
 type={artykuł},
 title={Phase detector of sound waves as an analyser of gas concentration in thermodiffusion process},
 keywords={Fizyka, Chemia},
}