SIHOMBING, Salem p. Studi pemeriksaan kekuatan tanah dengan dynamic cone penetrometer. Jurnal Jalan Jembatan, [S. l.], n. 1, p. 2–9, 2019. Disponível em: https://binamarga.pu.go.id/jurnal/index.php/jurnaljalanjembatan/article/view/538. Acesso em: 7 jul. 2025.