Numerical simulations on potential application of ground source heat pumps with vertical ground heat exchangers in Bangkok and Hanoi oleh Arif Widiatmojo, Youhei Uchida, Hikari Fujii, Hiroyuki Kosukegawa, Isao Takashima, Yutaro Shimada, Srilert Chotpantarat, Punya Charusiri, Trong Thang Tran