OrbeVR: a handheld concave spherical virtual reality display. - Olavo Da Rosa Belloc; Mario Nagamura; Douglas Fonseca dos Santos; André Montes Rodrigues; Diego Alves R. de Souza; Celso Setsuo Kurashima; Marcio Almeida; Eduardo Zilles Borba; Roseli de Deus Lopes; Marcelo Knörich Zuffo (SIGGRAPH Emerging Technologies, 2017)