Ref1

https://books.google.com.my/books?hl=en&lr=&id=-uSQL5cE_7EC&oi=fnd&pg=PA83&dq=chinese+jujube+underutilised+in+other+tropical+country&ots=10pmFC6q4G&sig=ZBt2bRHzDUFBH5_uXvf0MIZyh8w&redir_esc=y#v=onepage&q&f=false