Wijaya, J., P. G. Hartono, J. Setiawati, J. Wijaya, R. S. Sutanto, and E. J. W. Chendry. “The Profitability of Indonesian Infrastructure Companies Amid COVID-19: Quantile Regression for Stability Testing”. Jurnal Ekonomi &Amp; Studi Pembangunan, vol. 26, no. 1, Apr. 2024, pp. 135-56, doi:10.18196/jesp.v26i1.24971.