Circumference of standards with an external eccentricity

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Gorky Engineering and Construction Institute
  1. Shekhovtsov G.A. Kriterii i sredstva geometricheskoy interpretatsii pogreshnosti polozheniya tochek na ploskosti. Gorkiy. 1987. S. 198. Rukopis dep. v VINITI. № 192—V87. 
  2. Shekhovtsov G.A. Otsenka tochnosti zasechek s pomoshchyu okruzhnosti standartov // Geodeziya i kartografiya. 1985. № 8. S. 45—47.