%0 Journal Article %T Free vibration analysis of soil-beam-fluid interaction with variable Winkler backfill using DTM %A Rezaiee Pajand, Mohaamad %A Mirjalili, Zahra %A محمد صادق کاظمیان %A Arefipoor, Amirhossein %J Engineering Structures %@ 0141-0296 %D 2024