TY  JOUR
TI  THEORETICAL BACKGROUND OF CREATING A MATHEMATICAL MODEL OF TRACTOR  TRACTION EFFICIENCY
KW  mathematical model
KW  traction efficiency
KW  tractor
KW  wheel parameters
KW  rolling resistance coefficient
KW  slipping coefficient
KW  soil hardness
KW  unit speed
KW  traction force
JO  Vestnik of Kazan State Agrarian University
AU  Khafizov, K..
AU  Khafizov, R..
AU  Nurmiev, A.A.
AU  Galiev, I.G.
PY  2019
IS  14
PB  Kazan state agrarian University