The habit of people (especially from Tamil Nadu) to transliterate Sanskrit letter 'द' as 'dh' is causing problems. Besides the wrong addition of 'h' which indicates prana to a non-pranyakshara 'द' there is a tendency to retransliterate it as 'ध'. Thus Vidhyaranya is retransliterated as विध्यारण्य. -- regards, Sarma.