@article{KhatchikianRiebelKraeuter, author = {Khatchikian, Peter and Riebel, Ulrich and Kr{\"a}uter, Udo}, title = {Phase Velocity of Ultrasound in Suspensions of Large Particles}, issn = {1436-7947}, language = {en} } @article{BreitensteinKraeuterRiebel, author = {Breitenstein, Marcus and Kr{\"a}uter, Udo and Riebel, Ulrich}, title = {The Fundamentals of Particle Size Analysis by Transmission Fluctuation Spectrometry. Part 1: A Theory of Temporal Transmission Fluctuations in Dilute Suspensions}, language = {en} }