The families of the three girls killed in the Asiana Airlines jetliner crash in San Francisco on July 6 have retained a US law firm to claim compensation from the airline.

A notice was on the website of Kreindler & Kreindler LLP on Monday saying the firm has been retained by the families of the three students "and US and foreign passengers who suffered serious personal injuries" in the crash of Asiana Airlines Flight 214.

"The firm is vigorously investigating all potential contributing causes of the crash," the notice read. The firm's home page states it has a "well-earned" reputation in dealing with aviation accident litigation, and has offices in New York, Boston and Los Angeles.