https://uzindex.com/id/eprint/4073/1/INNOV%D0%90TSI%D0%9EN_P%D0%95D%D0%90G%D0%9EGIK_T%D0%95XN%D0%9EL%D0%9EGIY%D0%90L%D0%90RNING_%D0%90S%D0%9ESIY_PRINSIP_V%D0%90_Q.pdf