Afrouzi, G., Mirzapour, M., Khademloo, S. (2013). Eigenvalues for the Steklov problem via Ljusternic– Schnirelman principle. test, 21(1), 16-20. doi: 10.1016/j.joems.2012.10.006
G.A. Afrouzi; M. Mirzapour; S. Khademloo. "Eigenvalues for the Steklov problem via Ljusternic– Schnirelman principle". test, 21, 1, 2013, 16-20. doi: 10.1016/j.joems.2012.10.006
Afrouzi, G., Mirzapour, M., Khademloo, S. (2013). 'Eigenvalues for the Steklov problem via Ljusternic– Schnirelman principle', test, 21(1), pp. 16-20. doi: 10.1016/j.joems.2012.10.006
Afrouzi, G., Mirzapour, M., Khademloo, S. Eigenvalues for the Steklov problem via Ljusternic– Schnirelman principle. test, 2013; 21(1): 16-20. doi: 10.1016/j.joems.2012.10.006