%0 Journal Article %T OPTIMIZATION OF SOWN AREA STRUCTURE OF CROPS BY ECONOMIC AND MATHEMATICAL MODELING: PRACTICAL ASPECT %A Nuretdinova, Y.. %A Nuretdinov, I.. %A Khasyanov, O.. %K modeling, land-use efficiency, predictive structure. %J Vestnik of Kazan State Agrarian University %D 2015 %N 10 %P 3 %I Kazan state agrarian University