This article studies the problem of testing partial parameter stability in cointegrated regression models. The existing literature considers a variety models depending on whether all coefficients are allowed to change (pure structural change) or subset is held fixed (partial change). We first show that limit distributions test statistics latter case not invariant changes being tested; fact, the...

background: cryopreservation and in vitro maturation (ivm) of oocyte is becoming an important technique in infertility treatment and fertility preservation. also it has been proposed to establish a genetic resource bank for endangered or commercially important animal species. objective: the aim of this study was to evaluate viability, maturation and fertilization rate of mouse immature oocytes ...