To treat data from temperature modulated differential scanning calorimetry (TMDSC) in terms of complex or reversing heat capacity
firstly one should pay attention that the response is linear and stationary because this is a prerequisite for data evaluation.
The reason for non-linear and non-stationary thermal response is discussed and its influence on complex (reversing) heat capacity
determination is shown. The criterion for linear and stationary response is proposed. This allows to choose correct experimental
conditions for any complex heat capacity measurement. In the case when these conditions can not be fulfilled because of experimental
restrictions one can estimate the influence of non-linearity and non-stationarity on measured value of complex or reversing