Hrennikoff, Alexander (1941). "Solution of problems of elasticity by the framework method". Journal of Applied Mechanics. 8 (4): 169–175. Bibcode:1941JAM.....8A.169H. doi:10.1115/1.4009129.
Hrennikoff, Alexander (1941). "Solution of problems of elasticity by the framework method". Journal of Applied Mechanics. 8 (4): 169–175. Bibcode:1941JAM.....8A.169H. doi:10.1115/1.4009129.