Two Contrastive Boson-Pair Coherent States in Deformed Boson Scheme
  Two types of boson-pair coherent states, which were proposed independently by the present authors, are investigated. Main conclusion is as follows : Although the two states are superposed contrastively in terms of the boson-pairs, the expectation values of the boson-pair operators for these states are the same as one another with high accuracy. 
A.Kuriyama (Kansai Univ. Japan), C.Providencia (Univ. de Coimbra,   Portugal), J.da Providencia (Univ. de Coimbra, Portugal)...