[1] Axler S., Gehrinn W., Ribet K., "Elements of functional Analysis", New York: Springer-Verlage, (1999).
[2] Bahrami F., Bayati Eshkaftki A., Manjegani S., "Memorization on l_1 and on its closed linear subspace, and their linear preservers", Linear Algebra Appl, 437 (2012) 2340-2358.
[3] Bayati Eshkaftki A., "D-Norm and isometries on c_0 spaces", Oper. Mat, 41 (2017) 2340-2358.
[4] Birkhoff G., "Orthogonality in linear metric spaces", Duke Math. J, 1 (1935) 169–172.
[5] Fleming R.J., Jamsion J.E., "Isometries on Banach space: function space", Boca Raton. FL: CRC Press, (2007).
[6] Hagler J., "A counterexample to several questions about Banach spaces", Studia Mathematica, 3 (1977) 289–308.
[7] Ljubenovic M., Djordjevic D.S., "Linear preservers of weak majorization on 〖l^1 (I)〗^+ when I is an infinite set", Linear Algebra Appl, 517 (2017) 177-198.