Neopterin: a predictive marker of acquired immune deficiency syndrome in human immunodeficiency virus infection
In: Journal of Acquired Immune Deficiency Syndromes, Jg. 2 H. 3, S. 291-296The nonlinear mechanism of direction selectivity in the fly motion detection system
In: Naturwissenschaften, Jg. 76 H. 1, S. 32-35Nonnegative matrices, zero patterns, and spectral inequalities
In: Linear algebra and its applications, Jg. 120, S. 225-236