Cognitive* presence* as a unified* concept* of virtual* reality* effectiveness*OKDavid Nunez 0001Edwin H. BlakeCognitive presence as a unified concept of virtual reality effectiveness.Afrigraph115-1182001Conference and Workshop Papersclosedconf/afrigraph/NunezB0110.1145/513867.513892https://doi.org/10.1145/513867.513892https://dblp.org/rec/conf/afrigraph/NunezB01URL#6350487