KARTHICK, Balasubramanian, Rachna NAUTIYAL, J. Patrick KOCIOLEK, & T.V. RAMACHANDRA 2015 (July) Two new species of Gomphonema (Bacillariophyceae) from Doon Valley, Uttarakhand, India Beih. Nova Hedwigia 144: 165-174, 31 figs., 1 table