TY  JOUR
TI  
KW  foreign trade contract
KW  the method of payment
KW  form of payment
KW  letter of credit
KW  collection
KW  bill of exchange
KW  check
KW  bank transfer
KW  optimality conditions
JO  MOSCOW ECONOMIC JOURNAL
AU  , ..
PY  2016
IS  1
PB  Electronic science