Preliminary Structural Comparison of the Proteinase Isoinhibitors IIA and IIB from Bull Seminal Plasma Based on Individual Assignments of the 1H Nuclear Magnetic Resonance Spectra by Two-dimensional Nuclear Magnetic Resonance at 500 MHz - Strop, Petr; Cechova, Dana; Wuthrich, Kurt (Biological Magnetic Resonance Bank, 1999)