@Override
	public String getPropertyValues()
	{
		String var;
		if(Math.abs(variance) < EPS) var = "";
		else var = " (var=" +variance +")";
		
		if(min != UNDEFINED) {
			if(max != UNDEFINED) {
				if(min == max) {
					return min +getUnit() +var;
				} else {
					return "[" +min +", " +max +"]" +getUnit() +var;
				}
			} else {
				return "min " +min +getUnit() +var;
			}
		} else {
			if(max != UNDEFINED) {
				return "max " +max +getUnit() +var;
			} else {
				return "no restrictions";
			}			
		}
	}