Loss per common share (Tables)

3 Months Ended

Mar. 31, 2015

Basic and diluted loss per share for the three months ended March 31, 2015 and 2014, respectively, were as follows:



	Three months ended March 31,
	2015			2014
Net loss attributable to stockholders	$	(617,464	)	$	(1,020,045	)
Weighted average shares outstanding - Basic and diluted	16,224,642			14,796,413
Basic and diluted loss per share	$	(0.04	)	$	(0.07	)
Anti-dilutive shares underlying stock options outstanding	1,186,325			1,095,250
Anti-dilutive convertible debentures	555,556			75,806