APA

Tiao G. C., Guttman I., .Forecasting contemporal aggregates of multiple time series. : .

Chicago

Tiao George C, Guttman Irwin, .Forecasting contemporal aggregates of multiple time series. : .

Harvard

Tiao G. C., Guttman I., .Forecasting contemporal aggregates of multiple time series. : .

MLA

Tiao George C, Guttman Irwin, .: . .