Singh, Gurdip; Sing, Om Prakash; Prasad, Rajendra; Perotti, Marina Elvira; Catalan, Cesar Atilio Nazareno(National Institute of Science Communication, 2003-05)
Kapoor, I. P. S.; Singh, Bandana; Singh, Gurdip; Schuff, Carola; Perotti, Marina Elvira; Catalan, Cesar Atilio Nazareno(American Chemical Society, 2009-06)
Singh, Gurdip; Singh, Om Prakash; Maurya, Sumitra; Marimuthu, Pachia; Perotti, Marina Elvira; Catalan, Cesar Atilio Nazareno(Essential Oil Association of India, 2005-04)