Challenging transactions debtor: comparative legal aspects doctrinal interpretation and practice

In the article one of the most effective instruments in the bankruptcy proceedings, which is to challenge «suspicious» transactions of the debtor in order to replenish the estate as a result of her return to the previously expropriated property. Conducted comparative legal studies as the general conditions of the invalidity of transactions, as well as the grounds for challenging the transactions made by the debtor. On the basis of normative and doctrinal classification of invalid transactions analyzed actual problems judicial practice bankruptcy and short stories and trends of domestic civil law.