C. Allgeier, JJ. Neumeier, JS. Schilling: STRONG INFLUENCE OF THE OXYGEN-CONTENT ON THE ELECTRICAL AND MAGNETIC-PROPERTIES OF BI2SR1.6LA0.4CUOY. 1992Physica C: 194. ISBN 0921-4534 http://dx.doi.org/10.1016/S0921-4534(05)80012-7