Michelberger P, Nádai L, Várlaki P, Joó I. Riesz Bases in Control Theory. Period. Polytech. Transp. Eng. [Internet]. 2002 Jan. 1 [cited 2024 May 3];30(1-2):21-36. Available from: https://pp.bme.hu/tr/article/view/1942