Results of test of check of an aggregation universal-row tractors with a changeable ground clearance with a seeder SChH-4B and technical characteristics of an aggregation are given in the article
Axmetov, A A. and Axmetov, Sh A.
"TRACTOR AGGREGATION WITH AN ADJUSTABLE CLEARANCE WITH SCHH-4B SEEDER,"
Scientific-technical journal: Vol. 22
, Article 37.
Available at: https://uzjournals.edu.uz/ferpi/vol22/iss1/37