Erratum

After publication of the original article (Zhu et al. 2017), the author has noticed some error with the figure citation in Results and Discussion section, under the title ‘VEC model’ and ‘Impulse response function’. Details are as follows:

  1. (1)

    “Finally we test VEC stability condition, Fig. 1 is the AR roots graph, and all the spots are in the unit circle so the model is stable.”

‘Figure 1’ should be corrected to ‘Fig. 2’.

  1. (2)

    “Figure 2 shows the results of impulse response function (Fig. 3).”

This sentence should be corrected to “Fig. 3 shows the results of impulse response function.”

  1. (3)

    “Figure 2 shows that the impulse response of BTC to all the other variables is zero in the first period.”

‘ Figure 2’ should be corrected to ‘Fig. 3’.

The original article has been updated. We apologize for any inconvenience caused.