Daughters right in parental property

Dear Sir/Madam, I am from Bihar. we are 2 sisters and 3 brothers. All are married. My father died in 1996 without leaving any will. At that time he was working as Bank Manager & after his death, youngest brother got job in his bank on compassionate ground. I got married after 6 months of his death. My mother is still alive. My father has left a lot of property. Some property is in his name, Some in Mother's name & some in grandfathers name which grandfather bought himself. My brothers want to divide/sell them and share the money between them without consulting or including us. My question is: Do I have any claim in this property? if yes under which law, section etc. What should be the most peaceful legal channel to claim our right to our father's property? All I want is that the property be divided equally among 5 siblings ( sons and daughters). My mother is't ready to give the property to us. She wants to give the entire property to our brothers. Please advise. Thanks.