Analysis of information sources in references of the Wikipedia article "Romanization of Korean" in English language version.
심정수는 이주 과정에서 여권 신청서를 작성할 때 실수로 아들들의 성을 'SIM'으로 적었다고 한다. 뒤늦게 실수를 알았지만, 다시 이름을 바꾸기는 어려웠다.[When Shim Jeong-soo was applying for his sons' passports to go abroad, he mistakenly wrote their surname as "SIM". He later realized his mistake, but it was too late to change.]